25 entries under adjective topic. ×

3
observant(careless, alert, watchful)
3
perceptive(careless, alert, sensitive, insensitive)
2
cautious(careless, careful, reckless, guarded)
1
alert(lively, attentive)
1
attentive
1
detail oriented(uncaring, inexact, absent-minded, unlistening)
1
mindful(quiet, careless)
1
perspicacious(perceptive, ignorant, observant)
1
regardful(attentive, ignorant, observant)
1
vigilant(careless, indifferent)
1
watchful
0
apprehensive
0
aware
0
calculating
0
careful
0
circumspect
0
deliberate
0
heedful
0
keen
0
precise
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APASmart Define. (2015). unobservant thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/unobservant/thesaurus/antonyms
ChicagoSmart Define. 2015. "unobservant thesaurus" https://smartdefine.org/unobservant/thesaurus/antonyms (accessed September 29, 2026).
HarvardSmart Define 2015, unobservant thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/unobservant/thesaurus/antonyms>.
MLASmart Define. "unobservant thesaurus" 14 April 2015. Web. 29 September 2026. <https://smartdefine.org/unobservant/thesaurus/antonyms>