49 entries under adjective topic. ×

19
unalert
11
careless
8
lethargic(dull, energetic, careless, indifferent)
7
drowsy
6
lax
6
lazy
6
sluggish
5
inattentive
5
asleep(dull, careless, indifferent)
4
listless(energy, energetic, lively, spiritless)
3
heedless
3
forgetful
2
absentminded
2
languid(dull, listless, drooping)
2
absent-minded(out, attentive)
2
comatose
2
dreamy
2
dull(energetic, careless, indifferent)
2
glassy
2
inadvertent
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APASmart Define. (2016). alert thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/alert/thesaurus/antonyms
ChicagoSmart Define. 2016. "alert thesaurus" https://smartdefine.org/alert/thesaurus/antonyms (accessed September 24, 2026).
HarvardSmart Define 2016, alert thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/alert/thesaurus/antonyms>.
MLASmart Define. "alert thesaurus" 26 February 2016. Web. 24 September 2026. <https://smartdefine.org/alert/thesaurus/antonyms>