| vigilant(adjective, adverb, bright, lively, active) |
| acute(adjective, keen, anxious, alert, careful) |
| agog(adjective, keen, anxious, alert, careful) |
| alert(adjective, adverb, keen, careful, attentive) |
| anxious(adjective, keen, alert, careful, attentive) |
| attentive(adjective, adverb, keen, sharp, careful) |
| aware(adjective, keen, alert, careful, attentive) |
| careful(adjective, adverb, keen, alert, attentive) |
| cautious(adjective, adverb, keen, alert, careful) |
| circumspect(adjective, keen, alert, careful, attentive) |
| guarded(adjective, adverb, keen, anxious, alert) |
| heedful(adjective, adverb, bright, lively, active) |
| keen(adjective, anxious, alert, careful, cautious) |
| looking for(expression, adjective, keen, anxious, careful) |
| looking to(expression, adjective, keen, anxious, careful) |
| observant(adjective, adverb, keen, sympathetic, careful) |
| on alert(expression, adjective, keen, anxious, careful) |
| on guard(expression, adjective, keen, alert, careful) |
| on the ball(expression, adjective, idiom, keen, careful) |
| on the job(expression, adjective, adverb, keen, careful) |