| thinking twice(adjective, careful, thoughtful, cautious, prudent) |
| unsleeping(adjective, alert, careful, cautious, attentive) |
| wakeful(adjective, sharp, bright, alert, careful) |
| walking on eggs(adjective, careful, thoughtful, cautious, prudent) |
| watching out(adjective, careful, thoughtful, cautious, prudent) |
| wide-awake(adjective, sharp, bright, lively, active) |
| wired(adjective, sharp, bright, lively, active) |
| wise(adjective, sharp, bright, lively, active) |
| with eyes peeled(expression, adjective, idiom, ready, alert) |
| with it(expression, adjective, sharp, bright, lively) |
| with open eyes(expression, idiom) |
| accepting(adjective, attentive, observant) |
| accommodating(considerate, responsive, helpful) |
| apprehensive(alert, aware, clued-in) |
| attending(adjective, attentive, observant) |
| civil(considerate, responsive, helpful) |
| clued-in(alert, aware) |
| clued up(expression, alert, aware, clued-in) |
| conscientious(adjective, considerate, responsive, aware, helpful) |
| courteous(considerate, responsive, helpful) |