Synonyms of observant

1 Syllable

sharp, quick, glued, keen, bright, seeing

2 Syllables

probing, correct, surveying, gnostic, searching, noting, discreet, enrapt, docious, with-it, sophic, knowing, watchful, sharp-eyed, hawk-eyed, thoughtful, alert, watching, tactful, mindful, heedful, eager

3 Syllables

unsleeping, awaking, noticing, razor-sharp, careful, insomniac, deducing, insighted, awake, percipient, alive, circumspect, questioning, designing, regardful, sheeplike, well-trained, insightful, discerning, tuned-in, vigilant, advertent, clear-sighted, eagle-eyed, detecting, awaked, wakeful, obedient, punctilious, alerting, acute, cognizant, open-eyed

4 Syllables

considering, formalistic, sensitive, intelligent, cognoscible, appercipient, law-abiding, perceptive, penetrating, discovering, attentive, understanding, open-minded, acceptive, interested, contemplating, receptive, wide-awake, intentive, comprehending

5 Syllables

overconscientious, penetrative, discriminating, observative