| wakeful(keen, anxious, alert, careful, cautious) |
| wary(keen, alert, careful, attentive, watchful) |
| wide-awake(keen, anxious, alert, careful, attentive) |
| with eyes peeled(expression, idiom, keen, alert, careful) |
| with weather eye open(expression, idiom, keen, anxious, careful) |
| acute(keen, anxious, alert, careful, cautious) |
| agog(keen, anxious, alert, careful, cautious) |
| anxious(keen, alert, careful, attentive, watchful) |
| attentive(keen, alert, careful, watchful) |
| alert(keen, careful, attentive, watchful) |
| careful(keen, alert, attentive, watchful) |
| heedful(alert, attentive, watchful) |
| on call(adjective, ready) |
| on the alert(expression, idiom, alert, attentive, watchful) |
| on your guard(expression, idiom, alert, attentive, watchful) |
| watchful(keen, alert, careful, attentive) |