| keen(adjective, anxious, alert, careful, attentive) |
| leery(adjective, restrained, careful, reserved, prudent) |
| lidless |
| listening(adjective, considerate, responsive, aware, helpful) |
| lively(adjective, sharp, bright, alert, aware) |
| looking for(expression, adjective, keen, alert, careful) |
| looking to(expression, adjective, keen, alert, careful) |
| on alert(expression, adjective, keen, alert, careful) |
| on one's guard(adjective, wary) |
| on one's toes |
| on toes(expression, adjective, keen, alert, careful) |
| perceptive(adjective, sharp, bright, lively, alert) |
| playing it cool(expression, adjective, idiom, careful, prudent) |
| playing safe(expression, adjective, careful, thoughtful, prudent) |
| politic(adjective, careful, thoughtful, wise, prudent) |
| provident(adjective, careful, thoughtful, prudent, suspicious) |
| psyched up(expression, adjective, sharp, bright, lively) |
| pussyfoot(adjective, careful, thoughtful, cautious, prudent) |
| quick(adjective, sharp, bright, lively, alert) |
| ready(adjective, sharp, bright, lively, alert) |