| alertness | | |
| n. (cognition) | 1. alertness, vigilance, wakefulness, watchfulness | the process of paying close and continuous attention.; "wakefulness, watchfulness, and bellicosity make a good hunter"; "vigilance is especially susceptible to fatigue" |
| ~ attention | the faculty or power of mental concentration.; "keeping track of all the details requires your complete attention" |
| ~ jealousy | zealous vigilance.; "cherish their official political freedom with fierce jealousy" |
| n. (state) | 2. alerting, alertness | a state of readiness to respond.; "alerting was indicated by the desynchronization of the EEG" |
| ~ arousal | a state of heightened physiological activity. |
| n. (attribute) | 3. alertness, on the qui vive, sharp-sightedness | lively attentiveness. |
| ~ attentiveness | the trait of being observant and paying attention. |
| vigilance | | |
| n. (attribute) | 1. vigilance, watchfulness, weather eye | vigilant attentiveness.; "he keeps a weather eye open for trouble" |
| ~ attentiveness | the trait of being observant and paying attention. |
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