| intent(adjective, feature, characteristic, detail, determined) |
| discreet(adjective, sensible, restrained, careful, cautious) |
| on the lookout(expression, adjective, idiom, sharp, care) |
| wide-awake(adjective, keen, sharp, lively, alert) |
| canny(adjective, close, mean, cool, smart) |
| jealous(adjective, careful, caring, doubtful, suspicious) |
| observing(adjective, understanding, keen, sensible, certain) |
| ready(adjective, sharp, bright, lively, alert) |
| safe(adjective, restrained, careful, cautious, prudent) |
| sharp(adjective, understanding, cool, keen, bright) |
| sleepless(adjective, keen, alert, careful, restless) |
| solicitous(adjective, upset, excited, anxious, alert) |
| thoughtful(adjective, reasonable, sensible, alert, careful) |
| conscious(adjective, understanding, cool, keen, sensible) |
| meticulous(adjective, alert, careful, attentive, prudent) |
| on the ball(expression, adjective, idiom, keen, sharp) |
| sharp-eyed(adjective, alert, intelligent, attentive, vigilant) |
| wide awake(expression, adjective, idiom, sharp, bright) |
| alive(adjective, cool, alert, significant, animate) |
| anxious(adjective, upset, keen, excited, ready) |