136 entries under adjective topic. ×

4
scrutinizing(verb, attentive, examining)
4
thoughtful(kind, careful, caring, knowledgeable)
4
vigilant(understanding, keen, sensible, certain)
3
cautious(kind, friendly, careful, caring)
3
diligent
3
noting(verb, understanding, keen, sensible)
3
remarking(verb, understanding, keen, sensible)
3
sharp(perceptive, attentive, observant, insightful)
2
accompanying
2
alive to(verb, expression, phrasal verb, understanding)
2
awake(understanding, keen, sensible, certain)
2
cognizant(understanding, keen, sensible, certain)
2
concerned(kind, friendly, polite, caring)
2
engrossed
2
following
2
knowing(understanding, keen, sensible, certain)
2
on the ball(expression, idiom, careful, knowledgeable)
2
on the job(expression, idiom, careful, knowledgeable)
2
rapt(attention, attentive)
1
able to recognize(expression, idiom, understanding, keen)
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APASmart Define. (2015). observing thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/observing/thesaurus/synonyms
ChicagoSmart Define. 2015. "observing thesaurus" https://smartdefine.org/observing/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, observing thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/observing/thesaurus/synonyms>.
MLASmart Define. "observing thesaurus" 19 June 2015. Web. 22 September 2026. <https://smartdefine.org/observing/thesaurus/synonyms>