| heedful(adjective, alert, intelligent, attentive, watchful) |
| attentive(adjective, alert, intelligent, watchful, observant) |
| alert(adjective, intelligent, attentive, watchful, discerning) |
| observant(adjective, sympathetic, alert, considerate, witting) |
| regardful(adjective, correct, alert, intelligent, attentive) |
| aware(adjective, attentive, observant) |
| careful(adjective, attentive, observant) |
| mindful(adjective, correct, alert, intelligent, perceptive) |
| thoughtful(adjective, attentive, observant) |
| watchful(adjective, alert, intelligent, attentive, observant) |
| agog |
| considering(correct, alert, intelligent, perceptive, attentive) |
| intentive(adjective, correct, sympathetic, alert, intelligent) |
| nice |
| observing(attentive, observant) |
| on the ball(expression, idiom, alert, intelligent, attentive) |
| alive(adjective, correct, alert, intelligent, perceptive) |
| all ears |
| all eyes |
| assiduous |