64 entries under spontaneous topic. ×

5
improvised(adjective, free, simple, fake, natural)
5
unconscious(adjective, simple, natural, casual, impulsive)
5
unforced(adjective, open, simple, easy, loose)
5
unrehearsed(adjective, free, casual, impulsive)
4
ad-lib(adjective, free, simple, fake, natural)
4
involuntary(adjective, simple, natural, casual, impulsive)
4
unconstrained(adjective, simple, natural, casual, impulsive)
4
unintentional(adjective, simple, natural, casual, impulsive)
3
extemporized(adjective, unprepared, unplanned, unrehearsed)
3
impulsive(adjective, open, simple, easy, natural)
3
unarranged(adjective, unprepared, unplanned, unrehearsed)
2
free(adjective, simple, fake, natural, casual)
2
improviso(free, informal, casual, impulsive)
2
makeshift(free, informal, casual, impulsive)
2
off-the-cuff(adjective, simple, natural, casual, impulsive)
1
autoschediastic(free, casual, impulsive, unprepared)
1
break loose(expression, adjective, simple, natural, casual)
1
down(adjective, simple, natural, casual, impulsive)
1
fake(free, casual, impulsive, unprepared)
1
free spirited(expression, adjective, simple, natural, casual)
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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>