748 entries under adjective topic. ×

8
serendipitous(chance, random, lucky, unplanned)
8
serene(feature, state, calm, cool)
8
unforeseen(chance, random, liable, unintentional)
8
unhurried(feature, state, easy, slow)
8
unsystematic(careless, chance, erratic, random)
8
unworried(feature, state, calm, care)
7
calm(feature, state, cool, informal)
7
everyday(strong, simple, easy, plain)
7
extemporaneous(free, simple, natural, chance)
7
lackadaisical(calm, cool, relaxed, cheerful)
7
purposeless(careless, manner, erratic, nonchalant)
7
simple(lower, inferior, ordinary, familiar)
7
thoughtless(feature, state, careless, trait)
7
undemanding(feature, state, mild, relaxed)
7
worry-free(feature, state, trait)
6
extempore(free, simple, fake, natural)
6
familiar(calm, clear, open, smooth)
6
folksy(simple, relaxed, indifferent, familiar)
6
impulsive(smooth, simple, easy, careless)
6
incurious(calm, cool, careless, relaxed)
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APASmart Define. (2015). casual thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/casual/thesaurus/synonyms
ChicagoSmart Define. 2015. "casual thesaurus" https://smartdefine.org/casual/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2015, casual thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/casual/thesaurus/synonyms>.
MLASmart Define. "casual thesaurus" 1 December 2015. Web. 28 September 2026. <https://smartdefine.org/casual/thesaurus/synonyms>