11 entries under unobservant topic. ×

10
unaware(adjective, careless)
6
careless
5
inattentive(adjective, careless, attention, concerned, negligent)
4
thoughtless(adjective, reasonable, careless, prudent)
4
unmindful(adjective, careless)
3
heedless(adjective, careless, careful)
3
indifferent(adjective, careless)
3
neglectful(adjective, careless)
3
negligent(adjective, careless)
1
unwatchful(adjective, careless, concerned)
0
undiscriminating(adjective, careless)
10 years ago|1.6k views|share |citing 
APASmart Define. (2016). observant thesaurus. Retrieved September 30, 2026, from https://smartdefine.org/observant/thesaurus/antonyms
ChicagoSmart Define. 2016. "observant thesaurus" https://smartdefine.org/observant/thesaurus/antonyms (accessed September 30, 2026).
HarvardSmart Define 2016, observant thesaurus, Smart Define, viewed 30 September, 2026, <https://smartdefine.org/observant/thesaurus/antonyms>.
MLASmart Define. "observant thesaurus" 29 March 2016. Web. 30 September 2026. <https://smartdefine.org/observant/thesaurus/antonyms>