| acute(keen, anxious, alert, careful, cautious) |
| agog(keen, anxious, alert, careful, cautious) |
| anxious(keen, alert, careful, attentive, watchful) |
| attentive(keen, alert, careful, watchful) |
| aware(keen, alert, careful, attentive, watchful) |
| cautious(keen, alert, careful, attentive, watchful) |
| circumspect(keen, alert, careful, attentive, watchful) |
| guarded(keen, anxious, alert, careful, cautious) |
| keen(anxious, alert, careful, cautious, attentive) |
| looking for(expression, keen, anxious, alert, careful) |
| looking to(expression, keen, anxious, alert, careful) |
| observant(keen, alert, careful, attentive, watchful) |
| on alert(expression, keen, anxious, alert, careful) |
| on guard(expression, keen, anxious, alert, careful) |
| on the ball(expression, keen, alert, careful, attentive) |
| on the job(expression, idiom, keen, alert, careful) |
| on the lookout(expression, idiom, keen, alert, careful) |
| on the qui vive(expression, idiom, keen, alert, careful) |
| on toes(expression, keen, anxious, alert, careful) |
| open-eyed(keen, anxious, alert, careful, cautious) |