scrutinizing

careful, accurate, precise, exact, detailed, stringent, astringent, tender, advertent, watchful, exquisite, wistful, sound, set, punctual, astute, scholastic, subtle, tenuous, particular, literal, punctilious, scrutinizing

attentive, watchful, vigilant, observant, guarding, observing, contemplative, meditating, open-eyed, preserving, scrutinizing, wide-awake, tendering