210 entries under casual topic. ×

5
thoughtless(adjective, careless, indifferent, sloppy)
5
unceremonious(adjective, rude, careless, indifferent)
4
apathetic(adjective, calm, cool, relaxed, indifferent)
4
automatic(adjective, free, simple, fake, natural)
4
devil-may-care(noun, mild, careless, relaxed)
4
easy(adjective, calm, cool, relaxed, cheerful)
4
improviso(free, informal, impulsive, impulse)
4
lackadaisical(adjective, calm, cool, relaxed, detached)
4
negligent(adjective, calm, cool, careless, relaxed)
4
oblivious(happy-go-lucky, slapdash)
4
regardless(adjective, careless, indifferent, thoughtless)
4
smooth(adjective, calm, cool, easy, relaxed)
4
uncritical(adjective, mild, relaxed, quick)
4
unguarded(adjective, neglect, thoughtless, happy-go-lucky)
4
unmindful(adjective, careless, indifferent, thoughtless)
3
effortless(adjective, calm, cool, easy, relaxed)
3
folksy(adjective, cool, careless, indifferent)
3
hasty(adjective, rough, quick, thoughtless)
3
immediate(noun, adjective, free, informal)
3
inadvertent(adjective, careless, indifferent, unconcerned)
10 years ago|9.5k views|share |citing 
APASmart Define. (2016). offhand thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/offhand/thesaurus/synonyms
ChicagoSmart Define. 2016. "offhand thesaurus" https://smartdefine.org/offhand/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2016, offhand thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/offhand/thesaurus/synonyms>.
MLASmart Define. "offhand thesaurus" 24 March 2016. Web. 25 September 2026. <https://smartdefine.org/offhand/thesaurus/synonyms>