Synonyms|572Antonyms|111|Broader|6Narrower|1Related|510
3
dreamy
2
drowsy
2
impulsive(adjective, careless, indifferent)
2
inactive
2
indifferent(adjective, careless)
2
mindless
2
over smart
2
reckless
2
remiss
2
thoughtless(adjective, careless, indifferent)
2
unalert
1
derelict
1
distracted
1
indiscreet(adjective, careless, indifferent)
1
lax
1
lazy
1
rash(adjective, careless, indifferent)
1
unheeding
1
unmindful
1
unobservant(adjective, careless, indifferent)
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APASmart Define. (2015). vigilant thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/vigilant/thesaurus/antonyms
ChicagoSmart Define. 2015. "vigilant thesaurus" https://smartdefine.org/vigilant/thesaurus/antonyms (accessed September 26, 2026).
HarvardSmart Define 2015, vigilant thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/vigilant/thesaurus/antonyms>.
MLASmart Define. "vigilant thesaurus" 10 April 2015. Web. 26 September 2026. <https://smartdefine.org/vigilant/thesaurus/antonyms>