1
imperceptive(adjective, dull, careless, indifferent, thoughtless)
1
impercipient(adjective, inattentive, observant, unperceptive)
1
imprudent(careless, stupid, casual, rash, unthinking)
1
incautious(adjective, careless, indifferent, casual, sloppy)
1
incognizant(adjective, unaware)
1
inconscient(careless, remote, distracted, heedless, scatterbrained)
1
inconstant
1
indiscreet(adjective, indifferent, casual, thoughtless, sloppy)
1
indiscriminate(adjective, dull, careless, indifferent, thoughtless)
1
injudicious(adjective, careless, indifferent, foolish, stupid)
1
insensitive(adjective, dull, careless, indifferent, thoughtless)
1
irreflective(careless, stupid, rash, unthinking, obtuse)
1
lost(adjective, careless, indifferent, apathetic, remote)
1
mooning(careless, remote, distracted, heedless, scatterbrained)
1
moony(careless, remote, distracted, heedless, scatterbrained)
1
musing(noun, adjective, careless, indifferent, apathetic)
1
muzzy
1
myopic(adjective, dull, careless, indifferent, thoughtless)
1
nearsighted(adjective, dull, careless, indifferent, thoughtless)
1
nonadherent
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APASmart Define. (2015). unobservant thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/unobservant/thesaurus/synonyms
ChicagoSmart Define. 2015. "unobservant thesaurus" https://smartdefine.org/unobservant/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2015, unobservant thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/unobservant/thesaurus/synonyms>.
MLASmart Define. "unobservant thesaurus" 14 April 2015. Web. 28 September 2026. <https://smartdefine.org/unobservant/thesaurus/synonyms>