65 entries under casual topic. ×

12
natural(adjective, open, simple, reasonable, clean)
12
simple(adjective, clean, honest, plain, natural)
11
uncontrived(adjective, open, simple, easy, natural)
11
unsophisticated(adjective, simple, clean, honest, plain)
10
unpremeditated(adjective, free, spontaneous, impromptu)
9
extempore(adjective, free, simple, fake, natural)
9
impromptu(adjective, adverb, free, simple, fake)
9
informal(adjective, free, impulsive, spontaneous)
9
offhand(adjective, free, simple, fake, natural)
8
extemporaneous(adjective, simple, natural, impulsive)
8
instinctive(adjective, open, simple, easy, natural)
8
unplanned(adjective, free, simple, fake, natural)
6
extemporary(adjective, free, impulsive, spontaneous)
6
unprepared(adjective, free, spontaneous, impromptu)
5
ad lib(expression, adjective, free, unrehearsed)
5
automatic(adjective, free, simple, fake, natural)
5
improvised(adjective, free, simple, fake, natural)
5
unconscious(adjective, simple, natural, impulsive)
5
unforced(adjective, open, simple, easy, loose)
5
unrehearsed(adjective, free, impulsive, spontaneous)
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APASmart Define. (2015). unstudied thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/unstudied/thesaurus/synonyms
ChicagoSmart Define. 2015. "unstudied thesaurus" https://smartdefine.org/unstudied/thesaurus/synonyms (accessed September 29, 2026).
HarvardSmart Define 2015, unstudied thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/unstudied/thesaurus/synonyms>.
MLASmart Define. "unstudied thesaurus" 14 April 2015. Web. 29 September 2026. <https://smartdefine.org/unstudied/thesaurus/synonyms>