| alert(adjective, adverb, keen, sharp, smart) |
| vigilant(adjective, sharp, bright, lively, alert) |
| watchful(adjective, keen, sharp, lively, alert) |
| on the ball(expression, adjective, idiom, adverb, keen) |
| unsleeping(adjective, keen, anxious, alert, careful) |
| active(adjective, sharp, bright, lively, alert) |
| attentive(adjective, keen, sharp, bright, lively) |
| observant(adjective, keen, sharp, bright, lively) |
| open-eyed(adjective, keen, anxious, alert, careful) |
| quick(adjective, sharp, lively, alert, intelligent) |
| ready(adjective, adverb, sharp, bright, lively) |
| sharp(adjective, keen, lively, alert, careful) |
| wakeful(adjective, keen, anxious, alert, careful) |
| alive(sharp, alert, careful, intelligent, disturbed) |
| awake(adjective, sharp, careful, restless, disturbed) |
| bright(adjective, sharp, lively, alert, intelligent) |
| keen(adjective, sharp, smart, anxious, alert) |
| wary(adjective, keen, sharp, bright, lively) |
| designing |
| on the job(expression, adjective, idiom, keen, sharp) |