alert

(a) engaged in or accustomed to close observation
- caught by a couple of alert cops
- alert enough to spot the opportunity when it came
- constantly alert and vigilant, like a sentinel on duty
watchful,
(s) quick and energetic
- a brisk walk in the park
- a lively gait
- a merry chase
- traveling at a rattling rate
- a snappy pace
- a spanking breeze
brisk, spanking, zippy, rattling, lively, merry, snappy,
(s) mentally perceptive and responsive;"an alert mind"
- alert to the problems
- alive to what is going on
- awake to the dangers of her situation
- was now awake to the reality of his predicament
awake, alive,

(n) condition of heightened watchfulness or preparation for action
- bombers were put on alert during the crisis
qui vive,
(n) a warning serves to make you more alert to danger alerting,
(n) an automatic signal (usually a sound) warning of danger alarum, warning signal, alarm,

(v) warn or arouse to a sense of danger or call to a state of preparedness
- The empty house alarmed him
- We alerted the new neighbors to the high rate of burglaries
alarm,

alarm qui vive watchful brisk spanking zippy rattling lively merry snappy alerting alarum warning signal awake alive

unalert unvigilant unwatchful

alee Alep

aleph Aleut Aleve

alerting alertly alertness