| careful(adjective, keen, restrained, alert, hesitant) |
| cautious(adjective, keen, restrained, alert, careful) |
| on the job(expression, adjective, idiom, keen, alert) |
| acute(adjective, keen, anxious, alert, careful) |
| agog(adjective, keen, anxious, alert, careful) |
| alert(adjective, keen, careful, knowledgeable, cautious) |
| alive to(expression, adjective, careful, knowledgeable, cautious) |
| all ears(expression, adjective, ready, alert, careful) |
| anxious(adjective, keen, alert, careful, attentive) |
| apprehensive(adjective, careful, knowledgeable, cautious, aware) |
| attentive(adjective, keen, restrained, alert, careful) |
| au courant(expression, adjective, careful, aware, attentive) |
| aware(adjective, keen, alert, careful, attentive) |
| be up on(adjective, careful, knowledgeable, cautious, aware) |
| cagey(adjective, restrained, careful, hesitant, reserved) |
| chary(adjective, restrained, alert, careful, knowledgeable) |
| circumspect(adjective, keen, restrained, alert, careful) |
| cognizant(adjective, careful, knowledgeable, cautious, aware) |
| conscientious(adjective, careful, knowledgeable, cautious, aware) |
| conscious(adjective, careful, knowledgeable, cautious, aware) |