| lookout |
| mindful of |
| mistrustful(cautious, suspicious, watchful) |
| noncommittal(adjective, restrained, hesitant, reserved, cautious) |
| not missing a trick(expression, idiom, alert, attentive, observant) |
| obliging(considerate, responsive, helpful) |
| on the stick(expression, adjective, idiom, alert, aware) |
| on your guard(expression, adjective, alert, aware, attentive) |
| on your toes(expression, idiom, alert, aware, clued-in) |
| overcareful(adjective, restrained, hesitant, reserved, cautious) |
| overcautious(adjective, restrained, hesitant, reserved, cautious) |
| perspicacious(adjective, smooth, wise, prudent, tactful) |
| polite(considerate, responsive, helpful) |
| precautious(careful, thoughtful, watchful) |
| preoccupied(adjective, considerate, responsive, aware, helpful) |
| prepared(adjective, alert, aware, attentive, wary) |
| reserved(adjective, restrained, hesitant, cautious, suspicious) |
| respectful(considerate, responsive, helpful) |
| responsive(considerate, helpful) |
| restless(adjective, disturbed, sleepless) |