Synonyms|1.4kAntonyms|370|Broader|31Narrower|60Related|1.3k
19
unalert
11
careless
10
dead in the water
8
lethargic(adjective, dull, energetic, careless, indifferent)
8
dazed
7
drowsy(adjective, sleepy)
6
lax
6
lazy
6
sluggish(adjective, dull)
5
inattentive
5
asleep(adjective, dull, careless, indifferent)
5
distracted
4
absent
4
listless(adjective, energy, energetic, lively, spiritless)
4
fatuous
3
heedless
3
forgetful
3
gray
3
grey
2
absentminded(adjective, inattentive)
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APASmart Define. (2016). alert thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/alert/thesaurus/antonyms
ChicagoSmart Define. 2016. "alert thesaurus" https://smartdefine.org/alert/thesaurus/antonyms (accessed September 23, 2026).
HarvardSmart Define 2016, alert thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/alert/thesaurus/antonyms>.
MLASmart Define. "alert thesaurus" 26 February 2016. Web. 23 September 2026. <https://smartdefine.org/alert/thesaurus/antonyms>