| agile |
quick in mind; alert. [1/2 definitions] |
| APB |
a general bulletin or alert sent to many law-enforcement agencies; all-points bulletin. |
| awake |
keenly aware; alert. [1/6 definitions] |
| bleary-eyed |
not alert; not perceptive. [1/2 definitions] |
| clearheaded |
possessing an alert, perceptive, wide-awake mind. |
| comatose |
not alert or lively; lethargic. [1/2 definitions] |
| flag1 |
to signal or alert, esp. to stop, using or as if using a flag (sometimes fol. by "down"). [1/3 definitions] |
| fore2 |
in golf, used as a warning to alert those who may be in the path of a golf ball that is about to be driven. |
| have one's wits about one |
to stay alert and watchful. |
| heads-up |
displaying quick thinking or resourcefulness; alert; resourceful. [1/3 definitions] |
| hyperalert |
combined form of alert. |
| keep one's wits about one |
to stay alert and watchful. |
| live wire |
(informal) a lively, alert, and energetic person. [1/2 definitions] |
| observant |
watching carefully; alert; attentive. [1/2 definitions] |
| on guard |
alert and prepared. |
| on one's toes |
(informal) alert and ready to respond or act. |
| on the ball |
alert to one's surroundings; aware. [1/2 definitions] |
| on the qui vive |
on the lookout; alert; watchful. |
| overalert |
combined form of alert. |
| quick-witted |
mentally quick and alert. |
| reveille |
a call sounded early in the morning to waken or alert people, esp. a bugle call for troops to assemble. |