observantly

In watchful manner

In an observant manner—watching closely and noticing details: She studied him observantly, catching the slight tremor in his hands.

The word appears rarely; writers more often use phrases like "with keen attention" or simply show the character noticing things.

attentive

attentively

With concentrated awareness

keenly · intently · closely · carefully · studiously · vigilantly · eagle-eyed · hawk-eyed · sharp-eyed · unhurriedly

vigilant

watchfully

In an observant manner

circumspectly · protectively · defensively · suspiciously · on guard · alertly · prudently · charily · distrustfully

perceptive

astutely

With sharp discernment

perceptively · acutely · sagaciously · perspicaciously · with keen insight · incisively · penetratingly · wisely · judiciously · knowingly

analytical

critically

With serious judgment

meticulously · thoroughly · systematically · methodically · diagnostically · clinically · appraisingly

mindful

mindfully

With full present awareness

thoughtfully · deliberately · intentionally · meditatively · considerately · purposefully

Opposites
attentiveness

observantlyinattentively

Without mental focus

absently · absentmindedly · distractedly · obliviously · vacantly

care/diligence

observantlycarelessly

Without due attention

negligently · casually · thoughtlessly · incautiously · indifferently

Family

observant, nonobservant

Familiarity
Top 500,000
Profile
Used worldwide · Timeless · Abstract · Everyday, not technical · Rated G