11
heedless(adjective, careless, cold, forget, uncaring)
11
inattentive(adjective, careless, cold, attention, forget)
10
careless(adjective, cold, forget, uncaring, distracted)
10
unheeding(adjective, careless, cold, forget, attentive)
9
inadvertent(adjective, careless, cold, forget, uncaring)
9
unmindful(adjective, careless, cold, forget, uncaring)
8
negligent(adjective, careless, cold, forget, uncaring)
8
thoughtless(adjective, careless, cold, forget, uncaring)
8
unobservant(adjective, careless, cold, forget, uncaring)
7
unwatchful(adjective, careless, cold, indifferent, forget)
6
distrait(adjective, careless, cold, forget, apathetic)
6
neglectful(adjective, careless, cold, forget, uncaring)
6
regardless(adjective, careless, cold, indifferent, forget)
6
unwary(adjective, cold, forget, uncaring, inattentive)
5
absent-minded(adjective, careless, cold, forget, uncaring)
5
forgetful(adjective, cold, forget, uncaring, inattentive)
5
inconsiderate(adjective, cold, forget, uncaring, inattentive)
5
incurious(adjective, cold, forget, uncaring, inattentive)
5
remiss(adjective, careless, cold, forget, uncaring)
5
unheedful(adjective, cold, forget, uncaring, inattentive)
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APASmart Define. (2015). inobservant thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/inobservant/thesaurus/synonyms
ChicagoSmart Define. 2015. "inobservant thesaurus" https://smartdefine.org/inobservant/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, inobservant thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/inobservant/thesaurus/synonyms>.
MLASmart Define. "inobservant thesaurus" 14 April 2015. Web. 20 September 2026. <https://smartdefine.org/inobservant/thesaurus/synonyms>