| listen(verb, mind, notice, spot, avoid) |
| lively(sharp, bright, active, alert, aware) |
| look out(noun, verb, expression, information, see) |
| mind(verb, notice, spot, avoid, attend) |
| notice(noun, verb, mind, spot, avoid) |
| notification(information, sign, notice, alert, hint) |
| observant(sharp, bright, lively, alert, aware) |
| on guard(expression, sharp, bright, lively, alert) |
| on the ball(expression, adjective, idiom, sharp, bright) |
| on the job(expression, idiom, sharp, bright, lively) |
| on the lookout(expression, idiom, sharp, bright, lively) |
| on the qui vive(expression, idiom, sharp, bright, lively) |
| pay attention(verb, expression, see, mind, notice) |
| peg(verb, mind, notice, spot, avoid) |
| perceptive(sharp, bright, lively, active, alert) |
| pick up on(verb, expression, idiom, phrasal verb, see) |
| portent(information, sign, notice, alert, hint) |
| prediction(information, sign, notice, alert, hint) |
| presage(information, sign, notice, alert, hint) |
| psyched up(expression, sharp, bright, lively, active) |