85 entries under casual topic. ×

5
lackadaisical(adjective, calm, quiet, cool, easy)
5
mindless(adjective, indifferent, wild, stupid)
4
blase(adjective, calm, cool, relaxed, cold)
4
cursory(adjective, careless, indifferent, sloppy)
4
easy(adjective, feature, state, calm, quiet)
4
happy-go-lucky(adjective, feature, state, careless, trait)
4
napping(adjective, careless, thoughtless, inattentive)
4
unguarded(careless, bold, thoughtless, wary)
3
airy(adjective, feature, state, calm, cool)
3
cool(adjective, feature, state, calm, relaxed)
3
impassive(adjective, calm, cool, relaxed, cold)
3
inaccurate(adjective, soft, careless, loose)
3
indolent(adjective, careless, sluggish, lazy)
3
laid-back(adjective, feature, state, calm, cool)
3
light(adjective, feature, state, calm, cool)
3
neutral(adjective, calm, cool, relaxed, cold)
3
serene(adjective, feature, state, calm, cool)
3
untroubled(adjective, feature, state, calm, cool)
2
calm(adjective, feature, state, cool, relaxed)
2
dispassionate(adjective, calm, cool, relaxed, indifferent)
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APASmart Define. (2015). negligent thesaurus. Retrieved October 1, 2026, from https://smartdefine.org/negligent/thesaurus/synonyms
ChicagoSmart Define. 2015. "negligent thesaurus" https://smartdefine.org/negligent/thesaurus/synonyms (accessed October 1, 2026).
HarvardSmart Define 2015, negligent thesaurus, Smart Define, viewed 1 October, 2026, <https://smartdefine.org/negligent/thesaurus/synonyms>.
MLASmart Define. "negligent thesaurus" 13 April 2015. Web. 1 October 2026. <https://smartdefine.org/negligent/thesaurus/synonyms>