| on the lookout(expression, adjective, adverb, keen, careful) |
| on the qui vive(expression, adjective, idiom, keen, careful) |
| open-eyed(adjective, keen, anxious, alert, careful) |
| sharp(adjective, adverb, keen, alert, careful) |
| sleepless(adjective, keen, anxious, alert, careful) |
| unsleeping(adjective, keen, anxious, alert, careful) |
| waiting on(expression, adjective, keen, anxious, careful) |
| wakeful(adjective, keen, anxious, alert, careful) |
| wary(adjective, adverb, keen, alert, careful) |
| watchful(adjective, adverb, keen, alert, careful) |
| wide-awake(adjective, adverb, keen, sharp, careful) |
| wide awake(expression, sympathetic, cautious, witting, guarded) |
| with eyes peeled(expression, adjective, idiom, keen, careful) |
| with weather eye open(expression, adjective, idiom, keen, anxious) |
| across the board(expression, idiom, sympathetic, witting, all-embracing) |
| advertent(adjective, correct, sympathetic, witting, discerning) |
| alive |
| all-embracing(sympathetic, witting) |
| all around(expression, sympathetic, witting, all-embracing) |
| all heart(expression, sympathetic, witting, all-embracing) |