| opening | | |
| n. (object) | 1. gap, opening | an open or empty space in or between things.; "there was a small opening between the trees"; "the explosion made a gap in the wall" |
| ~ pocket | an opening at the corner or on the side of a billiard table into which billiard balls are struck. |
| ~ diastema | a gap or vacant space between two teeth. |
| ~ nodes of ranvier, ranvier's nodes | small gaps in the myelin sheath of medullated axons. |
| ~ foramen, hiatus | a natural opening or perforation through a bone or a membranous structure. |
| ~ breach | an opening (especially a gap in a dike or fortification). |
| ~ chasm | a deep opening in the earth's surface. |
| ~ crack, scissure, cleft, crevice, fissure | a long narrow opening. |
| ~ hole | an opening into or through something. |
| ~ mouth | an opening that resembles a mouth (as of a cave or a gorge).; "he rode into the mouth of the canyon"; "they built a fire at the mouth of the cave" |
| ~ rift | a gap between cloud masses.; "the sun shone through a rift in the clouds" |
| ~ rent, rip, tear, snag, split | an opening made forcibly as by pulling apart.; "there was a rip in his pants"; "she had snags in her stockings" |
| ~ earth's surface, surface | the outermost level of the land or sea.; "earthquakes originate far below the surface"; "three quarters of the Earth's surface is covered by water" |
| ~ window | an opening that resembles a window in appearance or function.; "he could see them through a window in the trees" |
| ~ space | an empty area (usually bounded in some way between things).; "the architect left space in front of the building"; "they stopped at an open space in the jungle"; "the space between his teeth" |
| n. (event) | 2. opening | a ceremony accompanying the start of some enterprise. |
| ~ ceremonial, ceremonial occasion, ceremony, observance | a formal event performed on a special occasion.; "a ceremony commemorating Pearl Harbor" |
| n. (act) | 3. opening | becoming open or being made open.; "the opening of his arms was the sign I was waiting for" |
| ~ change of integrity | the act of changing the unity or wholeness of something. |
| ~ cutting, cut | the act of penetrating or opening open with a sharp edge.; "his cut in the lining revealed the hidden jewels" |
| n. (event) | 4. curtain raising, opening, opening night | the first performance (as of a theatrical production).; "the opening received good critical reviews" |
| ~ start | the beginning of anything.; "it was off to a good start" |
| n. (act) | 5. opening | the act of opening something.; "the ray of light revealed his cautious opening of the door" |
| ~ movement, motility, motion, move | a change of position that does not entail a change of location.; "the reflex motion of his eyebrows revealed his surprise"; "movement is a sign of life"; "an impatient move of his hand"; "gastrointestinal motility" |
| n. (state) | 6. opening | opportunity especially for employment or promotion.; "there is an opening in the sales department" |
| ~ chance, opportunity | a possibility due to a favorable combination of circumstances.; "the holiday gave us the opportunity to visit Washington"; "now is your chance" |
| n. (communication) | 7. opening | the initial part of the introduction.; "the opening established the basic theme" |
| ~ introduction | the first section of a communication. |
| ~ teaser | an attention-getting opening presented at the start of a television show. |
| ~ salutation | word of greeting used to begin a letter. |
| n. (cognition) | 8. opening, possibility, possible action | a possible alternative.; "bankruptcy is always a possibility" |
| ~ alternative, option, choice | one of a number of things from which only one can be chosen.; "what option did I have?"; "there no other alternative"; "my only choice is to refuse" |
| ~ possible | something that can be done.; "politics is the art of the possible" |
| n. (body) | 9. opening, orifice, porta | an aperture or hole that opens into a bodily cavity.; "the orifice into the aorta from the lower left chamber of the heart" |
| ~ vent | external opening of urinary or genital system of a lower vertebrate. |
| ~ blastopore | the opening into the archenteron. |
| ~ aortic orifice | the orifice from the lower left chamber of the heart to the aorta. |
| ~ stoma | a mouth or mouthlike opening (especially one created by surgery on the surface of the body to create an opening to an internal organ). |
| ~ passageway, passage | a path or channel or duct through or along which something may pass.; "the nasal passages" |
| ~ porta hepatis | opening for major blood vessels to enter and leave the liver. |
| ~ spiracle | a breathing orifice. |
| ~ mouth | the externally visible part of the oral cavity on the face and the system of organs surrounding the opening.; "she wiped lipstick from her mouth" |
| ~ os | a mouth or mouthlike opening. |
| ~ cervix uteri, uterine cervix, cervix | necklike opening to the uterus. |
| ~ fenestra | a small opening covered with membrane (especially one in the bone between the middle and inner ear). |
| ~ cardia | the opening into the stomach and that part of the stomach connected to the esophagus. |
| ~ introitus | entrance or opening to a hollow organ or tube (especially the vaginal opening).; "the introitus of the vagina" |
| ~ external orifice, urethral orifice | the orifice through which urine is discharged. |
| ~ pylorus | a small circular opening between the stomach and the duodenum. |
| ~ anus | the excretory opening at the end of the alimentary canal. |
| ~ fontanel, fontanelle, soft spot | any membranous gap between the bones of the cranium in an infant or fetus. |
| ~ naris | any of the openings to the nasal cavities that allow air to flow through the cavities to the pharynx. |
| ~ rima | a narrow elongated opening or fissure between two symmetrical parts. |
| n. (artifact) | 10. opening | a vacant or unobstructed space that is man-made.; "they left a small opening for the cat at the bottom of the door" |
| ~ artefact, artifact | a man-made object taken as a whole. |
| ~ aperture | an man-made opening; usually small. |
| ~ bell | the flared opening of a tubular device. |
| ~ breech, rear of barrel, rear of tube | opening in the rear of the barrel of a gun where bullets can be loaded. |
| ~ exit, way out, outlet, issue | an opening that permits escape or release.; "he blocked the way out"; "the canyon had only one issue" |
| ~ fly front, fly | an opening in a garment that is closed by a zipper or by buttons concealed under a fold of cloth. |
| ~ crack, gap | a narrow opening.; "he opened the window a crack" |
| ~ gun muzzle, muzzle | the open circular discharging end of a gun. |
| ~ hole | an opening deliberately made in or through something. |
| ~ inlet, intake | an opening through which fluid is admitted to a tube or container. |
| ~ interstice | small opening between things. |
| ~ fenestella, lunette | oval or circular opening; to allow light into a dome or vault. |
| ~ mouth | the opening of a jar or bottle.; "the jar had a wide mouth" |
| ~ neck opening, neck | an opening in a garment for the neck of the wearer; a part of the garment near the wearer's neck. |
| ~ pass-through | an opening that resembles a window between two rooms (especially a shelved opening between a kitchen and dining room that is used to pass dishes). |
| ~ embrasure, porthole, port | an opening (in a wall or ship or armored vehicle) for firing through. |
| ~ slit | a long narrow opening. |
| ~ spout | an opening that allows the passage of liquids or grain. |
| ~ throat | an opening in the vamp of a shoe at the instep. |
| ~ grille, lattice, wicket | small opening (like a window in a door) through which business can be transacted. |
| ~ window | a transparent opening in a vehicle that allow vision out of the sides or back; usually is capable of being opened. |
| ~ window | an opening in a wall or screen that admits light and air and through which customers can be served.; "he stuck his head in the window" |
| n. (artifact) | 11. hatchway, opening, scuttle | an entrance equipped with a hatch; especially a passageway between decks of a ship. |
| ~ entrance, entranceway, entryway, entree, entry | something that provides access (to get in or get out).; "they waited at the entrance to the garden"; "beggars waited just outside the entryway to the cathedral" |
| ~ escape hatch | hatchway that provides a means of escape in an emergency. |
| ~ hatch | a movable barrier covering a hatchway. |
| n. (act) | 12. chess opening, opening | a recognized sequence of moves at the beginning of a game of chess.; "he memorized all the important chess openings" |
| ~ chess game, chess | a board game for two players who move their 16 pieces according to specific rules; the object is to checkmate the opponent's king. |
| ~ succession, sequence | the action of following in order.; "he played the trumps in sequence" |
| n. (act) | 13. first step, initiative, opening, opening move | the first of a series of actions. |
| ~ commencement, beginning, start | the act of starting something.; "he was responsible for the beginning of negotiations" |
| ~ curtain raiser | any preliminary activity. |
| ~ first base | the initial stage in accomplishing something.; "we didn't get to first base with that approach" |
| ~ peace initiative | opening move in negotiating a peace treaty. |
| adj. | 14. opening | first or beginning.; "the memorable opening bars of Beethoven's Fifth"; "the play's opening scene" |
| ~ beginning, first | serving to begin.; "the beginning canto of the poem"; "the first verse" |
| ~ initiative, initiatory, maiden, inaugural, first | serving to set in motion.; "the magazine's inaugural issue"; "the initiative phase in the negotiations"; "an initiatory step toward a treaty"; "his first (or maiden) speech in Congress"; "the liner's maiden voyage" |
| ~ introductory | serving to open or begin.; "began the slide show with some introductory remarks" |
| ~ starting | appropriate to the beginning or start of an event.; "the starting point"; "hands in the starting position" |
| muzzle | | |
| n. (artifact) | 1. gun muzzle, muzzle | the open circular discharging end of a gun. |
| ~ gun | a weapon that discharges a missile at high velocity (especially from a metal tube or barrel). |
| ~ opening | a vacant or unobstructed space that is man-made.; "they left a small opening for the cat at the bottom of the door" |
| ~ gunpoint, point | the gun muzzle's direction.; "he held me up at the point of a gun" |
| n. (animal) | 2. muzzle | forward projecting part of the head of certain animals; includes the jaws and nose. |
| ~ neb, snout | a long projecting or anterior elongation of an animal's head; especially the nose. |
| ~ head, caput | the upper part of the human body or the front part of the body in animals; contains the face and brains.; "he stuck his head out the window" |
| ~ face | the part of an animal corresponding to the human face. |
| n. (artifact) | 3. muzzle | a leather or wire restraint that fits over an animal's snout (especially a dog's nose and jaws) and prevents it from eating or biting. |
| ~ constraint, restraint | a device that retards something's motion.; "the car did not have proper restraints fitted" |
| n. (artifact) | 4. gag, muzzle | restraint put into a person's mouth to prevent speaking or shouting. |
| ~ constraint, restraint | a device that retards something's motion.; "the car did not have proper restraints fitted" |
| v. (possession) | 5. muzzle | fit with a muzzle.; "muzzle the dog to prevent it from biting strangers" |
| ~ equip, fit out, outfit, fit | provide with (something) usually for a specific purpose.; "The expedition was equipped with proper clothing, food, and other necessities" |
| v. (perception) | 6. gag, muzzle | prevent from speaking out.; "The press was gagged" |
| ~ silence, hush, hush up, still, quieten, shut up | cause to be quiet or not talk.; "Please silence the children in the church!" |
| v. (contact) | 7. gag, muzzle | tie a gag around someone's mouth in order to silence them.; "The burglars gagged the home owner and tied him to a chair" |
| ~ tie, bind | fasten or secure with a rope, string, or cord.; "They tied their victim to the chair" |
| open | | |
| n. (location) | 1. clear, open | a clear or unobstructed space or expanse of land or water.; "finally broke out of the forest into the open" |
| ~ area, country | a particular geographical region of indefinite boundary (usually serving some special purpose or distinguished by its people or culture or geography).; "it was a mountainous area"; "Bible country" |
| n. (location) | 2. open, open air, out-of-doors, outdoors | where the air is unconfined.; "he wanted to get outdoors a little"; "the concert was held in the open air"; "camping in the open" |
| ~ exterior, outside | the region that is outside of something. |
| n. (event) | 3. open | a tournament in which both professionals and amateurs may play. |
| ~ tournament, tourney | a sporting competition in which contestants play a series of games to decide the winner. |
| n. (cognition) | 4. open, surface | information that has become public.; "all the reports were out in the open"; "the facts had been brought to the surface" |
| ~ general knowledge, public knowledge | knowledge that is available to anyone. |
| v. (contact) | 5. open, open up | cause to open or to become open.; "Mary opened the car door" |
| ~ unbar | remove a bar from (a door). |
| ~ break open | open with force.; "He broke open the picnic basket" |
| ~ click open | open with a clicking sound.; "These keys have clicked open many doors" |
| ~ reopen | open again or anew.; "They reopened the theater" |
| ~ open, open up | become open.; "The door opened" |
| ~ unlock | open the lock of.; "unlock the door" |
| ~ unbolt | undo the bolt of.; "unbolt the door" |
| ~ unseal | break the seal of.; "He unsealed the letter" |
| ~ uncork | draw the cork from (bottles).; "uncork the French wine" |
| ~ jimmy, lever, prise, pry, prize | to move or force, especially in an effort to get something open.; "The burglar jimmied the lock"; "Raccoons managed to pry the lid off the garbage pail" |
| ~ gap, breach | make an opening or gap in. |
| ~ lance | open by piercing with a lancet.; "lance a boil" |
| v. (social) | 6. open, open up | start to operate or function or cause to start operating or functioning.; "open a business" |
| ~ establish, found, launch, set up | set up or found.; "She set up a literacy program" |
| v. (contact) | 7. open, open up | become open.; "The door opened" |
| ~ change state, turn | undergo a transformation or a change of position or action.; "We turned from Socialism to Capitalism"; "The people turned against the President when he stole the election" |
| ~ unfasten | become undone or untied.; "The shoelaces unfastened" |
| ~ fly open | come open suddenly.; "the doors flew open in the strong gust" |
| v. (social) | 8. open | begin or set in action, of meetings, speeches, recitals, etc..; "He opened the meeting with a long speech" |
| ~ embark on, start up, commence, start | get off the ground.; "Who started this company?"; "We embarked on an exciting enterprise"; "I start my day with a good breakfast"; "We began the new semester"; "The afternoon session begins at 4 PM"; "The blood shed started when the partisans launched a surprise attack" |
| ~ inaugurate | open ceremoniously or dedicate formally. |
| ~ call to order | open formally.; "the chairman called the meeting to order by pounding his gavel" |
| v. (contact) | 9. open, spread, spread out, unfold | spread out or open from a closed or folded state.; "open the map"; "spread your arms" |
| ~ undo | cancel, annul, or reverse an action or its effect.; "I wish I could undo my actions" |
| ~ divaricate | spread apart.; "divaricate one's fingers" |
| ~ exfoliate | spread by opening the leaves of. |
| ~ grass | spread out clothes on the grass to let it dry and bleach. |
| ~ butterfly | cut and spread open, as in preparation for cooking.; "butterflied shrimp" |
| ~ uncross | change from a crossed to an uncrossed position.; "She uncrossed her legs" |
| ~ splay | spread open or apart.; "He splayed his huge hands over the table" |
| v. (change) | 10. open, open up | make available.; "This opens up new possibilities" |
| ~ open up, open | become available.; "an opportunity opened up" |
| ~ yield, afford, give | be the cause or source of.; "He gave me a lot of trouble"; "Our meeting afforded much interesting information" |
| v. (change) | 11. open, open up | become available.; "an opportunity opened up" |
| ~ come up, arise | result or issue.; "A slight unpleasantness arose from this discussion" |
| v. (stative) | 12. open | have an opening or passage or outlet.; "The bedrooms open into the hall" |
| v. (competition) | 13. open | make the opening move.; "Kasparov opened with a standard opening" |
| ~ chess game, chess | a board game for two players who move their 16 pieces according to specific rules; the object is to checkmate the opponent's king. |
| ~ move, go | have a turn; make one's move in a game.; "Can I go now?" |
| v. (possession) | 14. afford, give, open | afford access to.; "the door opens to the patio"; "The French doors give onto a terrace" |
| v. (perception) | 15. open | display the contents of a file or start an application as on a computer. |
| ~ display, exhibit, expose | to show, make visible or apparent.; "The Metropolitan Museum is exhibiting Goya's works this month"; "Why don't you show your nice legs and wear shorter skirts?"; "National leaders will have to display the highest skills of statesmanship" |
| adj. | 16. open, unfastened | affording unobstructed entrance and exit; not shut or closed.; "an open door"; "they left the door open" |
| ~ ajar | slightly open.; "the door was ajar" |
| ~ wide-open | open wide.; "left the doors wide-open" |
| ~ open | affording free passage or access.; "open drains"; "the road is open to traffic"; "open ranks" |
| adj. | 17. open | affording free passage or access.; "open drains"; "the road is open to traffic"; "open ranks" |
| ~ open, unfastened | affording unobstructed entrance and exit; not shut or closed.; "an open door"; "they left the door open" |
| ~ opened | made open or clear.; "the newly opened road" |
| ~ unstoppered | (of a container) having the stopper removed.; "whiskey spilled from the unstoppered bottle" |
| ~ yawning | gaping open as if threatening to engulf someone or something.; "the yawning mine shaft"; "a yawning abyss" |
| ~ unsealed | not closed or secured with or as if with a seal.; "unsealed goods"; "the letter arrived unsealed" |
| adj. | 18. exposed, open | with no protection or shield.; "the exposed northeast frontier"; "open to the weather"; "an open wound" |
| ~ unprotected | lacking protection or defense. |
| adj. | 19. open | open to or in view of all.; "an open protest"; "an open letter to the editor" |
| ~ public | not private; open to or concerning the people as a whole.; "the public good"; "public libraries"; "public funds"; "public parks"; "a public scandal"; "public gardens"; "performers and members of royal families are public figures" |
| adj. | 20. open, opened | used of mouth or eyes.; "keep your eyes open"; "his mouth slightly opened" |
| ~ agape, gaping | with the mouth wide open as in wonder or awe.; "the gaping audience"; "we stood there agape with wonder"; "with mouth agape" |
| ~ agaze, staring | (used of eyes) open and fixed as if in fear or wonder.; "staring eyes" |
| ~ wide-eyed, wide | (used of eyes) fully open or extended.; "stared with wide eyes" |
| ~ yawning | with the mouth wide open indicating boredom or sleepiness.; "a yawning congregation" |
| adj. | 21. open | not having been filled.; "the job is still open" |
| ~ available | obtainable or accessible and ready for use or service.; "kept a fire extinguisher available"; "much information is available through computers"; "available in many colors"; "the list of available candidates is unusually long" |
| adj. | 22. open | accessible to all.; "open season"; "an open economy" |
| ~ unrestricted | not subject to or subjected to restriction. |
| adj. | 23. assailable, open, undefendable, undefended | not defended or capable of being defended.; "an open city"; "open to attack" |
| ~ vulnerable | susceptible to attack.; "a vulnerable bridge" |
| adj. | 24. loose, open | (of textures) full of small openings or gaps.; "an open texture"; "a loose weave" |
| ~ coarse, harsh | of textures that are rough to the touch or substances consisting of relatively large particles.; "coarse meal"; "coarse sand"; "a coarse weave" |
| adj. | 25. open | having no protecting cover or enclosure.; "an open boat"; "an open fire"; "open sports cars" |
| ~ unenclosed | not closed in our surrounded or included.; "an unenclosed porch"; "unenclosed common land" |
| adj. | 26. open | (set theory) of an interval that contains neither of its endpoints. |
| ~ math, mathematics, maths | a science (or group of related sciences) dealing with the logic of quantity and shape and arrangement. |
| adj. | 27. open, undecided, undetermined, unresolved | not brought to a conclusion; subject to further thought.; "an open question"; "our position on this bill is still undecided"; "our lawsuit is still undetermined" |
| ~ unsettled | still in doubt.; "an unsettled issue"; "an unsettled state of mind" |
| adj. | 28. open, opened | not sealed or having been unsealed.; "the letter was already open"; "the opened package lay on the table" |
| ~ unsealed | not closed or secured with or as if with a seal.; "unsealed goods"; "the letter arrived unsealed" |
| adj. | 29. open | without undue constriction as from e.g. tenseness or inhibition.; "the clarity and resonance of an open tone"; "her natural and open response" |
| ~ unconstricted | not constricted physically or by extension psychologically.; "healthy unconstricted arteries" |
| adj. | 30. open, receptive | ready or willing to receive favorably.; "receptive to the proposals" |
| ~ acceptant, acceptive | accepting willingly.; "acceptive of every new idea"; "an acceptant type of mind" |
| ~ admissive | characterized by or allowing admission.; "an Elizabethan tragedy admissive of comic scenes" |
| ~ assimilative | capable of mentally absorbing.; "assimilative processes"; "assimilative capacity of the human mind" |
| ~ hospitable | having an open mind.; "hospitable to new ideas"; "open to suggestions" |
| adj. | 31. open, overt | open and observable; not secret or hidden.; "an overt lie"; "overt hostility"; "overt intelligence gathering"; "open ballots" |
| ~ explicit, expressed | precisely and clearly expressed or readily observable; leaving nothing to implication.; "explicit instructions"; "she made her wishes explicit"; "explicit sexual scenes" |
| ~ bald, barefaced | with no effort to conceal.; "a barefaced lie" |
| ~ naked, raw | devoid of elaboration or diminution or concealment; bare and pure.; "naked ambition"; "raw fury"; "you may kill someone someday with your raw power" |
| ~ undisguised | plain to see.; "undisguised curiosity" |
| ~ visible | obvious to the eye.; "a visible change of expression" |
| ~ public | not private; open to or concerning the people as a whole.; "the public good"; "public libraries"; "public funds"; "public parks"; "a public scandal"; "public gardens"; "performers and members of royal families are public figures" |
| ~ unconcealed | not concealed or hidden.; "her unconcealed hostility poisoned the atmosphere"; "watched with unconcealed curiosity" |
| adj. | 32. open | not requiring union membership.; "an open shop employs nonunion workers" |
| ~ nonunion | not belonging to or not allowing affiliation with a trade union.; "nonunion carpenters"; "a nonunion contractor" |
| adj. | 33. capable, open, subject | possibly accepting or permitting.; "a passage capable of misinterpretation"; "open to interpretation"; "an issue open to question"; "the time is fixed by the director and players and therefore subject to much variation" |
| ~ susceptible | (often followed by `of' or `to') yielding readily to or capable of.; "susceptible to colds"; "susceptible of proof" |
| adj. | 34. clear, open | affording free passage or view.; "a clear view"; "a clear path to victory"; "open waters"; "the open countryside" |
| ~ unobstructed | free from impediment or obstruction or hindrance.; "an unobstructed view" |
| adj. | 35. candid, heart-to-heart, open | openly straightforward and direct without reserve or secretiveness.; "his candid eyes"; "an open and trusting nature"; "a heart-to-heart talk" |
| ~ artless, ingenuous | characterized by an inability to mask your feelings; not devious.; "an ingenuous admission of responsibility" |
| adj. | 36. open | ready for business.; "the stores are open" |
| ~ active | full of activity or engaged in continuous activity.; "an active seaport"; "an active bond market"; "an active account" |
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