7
unwatchful(adjective, careless, bold, thoughtless, impulsive)
6
incautious(adjective, careless, careful, thoughtless, rash)
6
unguarded(adjective, careless, bold, thoughtless, wary)
6
unwary(adjective, careless, thoughtless, rash, reckless)
3
careless(adjective, weak, bold, thoughtless, impulsive)
3
heedless(adjective, careless, bold, thoughtless, impulsive)
3
inattentive
3
unalert(adjective, careless, bold, thoughtless, impulsive)
2
inadvertent
2
inconsiderate(adjective, careless, bold, thoughtless, impulsive)
2
neglectful(adjective, careless, bold, thoughtless, impulsive)
2
negligent(adjective, careless, bold, thoughtless, impulsive)
2
off guard(expression, adjective, careless, bold, thoughtless)
2
reckless(adjective, careless, bold, thoughtless, wary)
2
unheeding
2
unobservant
2
unthinking(adjective, careless, bold, thoughtless, impulsive)
1
any old way(expression, idiom, careless, bold, thoughtless)
1
asleep
1
bold(adjective, careless, thoughtless, wary, heedless)
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APASmart Define. (2015). unvigilant thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/unvigilant/thesaurus/synonyms
ChicagoSmart Define. 2015. "unvigilant thesaurus" https://smartdefine.org/unvigilant/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, unvigilant thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/unvigilant/thesaurus/synonyms>.
MLASmart Define. "unvigilant thesaurus" 14 April 2015. Web. 20 September 2026. <https://smartdefine.org/unvigilant/thesaurus/synonyms>