Synonyms|572Antonyms|111|Broader|6Narrower|1Related|510
19
careless(adjective, indifferent)
14
half ass
13
inattentive(adjective, careless, indifferent)
13
unaware(adjective, careless, indifferent)
9
unwatchful
8
negligent(adjective, careless, indifferent)
7
forgetful
6
absentminded
5
neglectful
5
heedless(adjective, careless, indifferent)
4
absent
4
incautious(adjective, careless, indifferent)
4
oblivious
4
preoccupied
4
slack
4
unwary
3
abstracted
3
asleep
3
daydreaming
3
dazed
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APASmart Define. (2015). vigilant thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/vigilant/thesaurus/antonyms
ChicagoSmart Define. 2015. "vigilant thesaurus" https://smartdefine.org/vigilant/thesaurus/antonyms (accessed September 24, 2026).
HarvardSmart Define 2015, vigilant thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/vigilant/thesaurus/antonyms>.
MLASmart Define. "vigilant thesaurus" 10 April 2015. Web. 24 September 2026. <https://smartdefine.org/vigilant/thesaurus/antonyms>