37 entries under unprepared topic. ×

24
impromptu(adjective, adverb, free, simple, fake)
20
offhand(adjective, adverb, free, simple, fake)
16
extemporaneous(adjective, simple, informal, natural, chance)
13
extemporary(adjective, free, casual, impulsive, prepared)
11
spontaneous(adjective, free, simple, fake, informal)
9
ad-lib(adjective, adverb, free, simple, fake)
9
improvised(adjective, free, simple, fake, informal)
9
off-the-cuff(adjective, simple, informal, natural, straightforward)
9
unstudied(adjective, free, simple, fake, natural)
7
casual(adjective, free, simple, fake, natural)
7
unplanned(adjective, free, simple, fake, informal)
3
improvisatory(adjective, free, casual, impulsive, spontaneous)
3
unscripted(adjective, spontaneous, impromptu, unplanned)
2
automatic(adjective, free, simple, fake, natural)
2
extemporized(adjective, informal, spontaneous, unrehearsed)
2
free(adjective, simple, fake, natural, straightforward)
2
improv(adjective, free, simple, fake, straightforward)
2
improviso(free, casual, impulsive, impulse, spontaneous)
2
snap(adjective, free, casual, impulsive, prepared)
1
autoschediastic(free, casual, impulsive, spontaneous)
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APASmart Define. (2015). extempore thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/extempore/thesaurus/synonyms
ChicagoSmart Define. 2015. "extempore thesaurus" https://smartdefine.org/extempore/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, extempore thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/extempore/thesaurus/synonyms>.
MLASmart Define. "extempore thesaurus" 10 April 2015. Web. 25 September 2026. <https://smartdefine.org/extempore/thesaurus/synonyms>