| surveying(adjective, alert, attentive, watchful, circumspect) |
| understanding(noun, adjective, sharp, smart, alert) |
| absorbed(adjective, attention, attentive) |
| assiduous(adjective, thoughtful, sober, considerate, cautious) |
| chary(adjective, reasonable, sensible, deliberate, restrained) |
| cognizant(adjective, understanding, cool, sensible, significant) |
| compliant(adjective, submissive, docile, deferential, dutiful) |
| contemplating(adjective, alert, attentive, watchful, circumspect) |
| deliberate(adjective, cool, kind, friendly, alert) |
| judicious(adjective, understanding, cool, reasonable, keen) |
| law-abiding(adjective, attentive, compliant, submissive, docile) |
| on the watch(expression, adjective, idiom, adverb, attention) |
| ready(adjective, open, sharp, friendly, bright) |
| respectful(adjective, careful, considerate, aware, attentive) |
| wide-awake(adjective, keen, sharp, bright, lively) |
| Argus-eyed |
| active(sharp, bright, lively, alert, aware) |
| agog(adjective, strong, keen, intense, powerful) |
| all ears(expression, adjective, sharp, bright, lively) |
| apprehensive(adjective, cool, sensible, deliberate, alert) |