73 entries under casual topic. ×

2
ad lib(expression, adjective, free, informal, mock)
2
by ear(expression, adjective, free, fake, informal)
2
extempore(adjective, free, simple, fake, straightforward)
2
free(adjective, simple, fake, straightforward)
2
improvisatory(adjective, free, fake, informal)
2
improviso(adjective, free, fake, informal, mock)
2
makeshift(adjective, adverb, free, impromptu)
2
offhand(adjective, adverb, free, spontaneous)
2
on-the-spot(adjective, free, fake, informal)
2
on impulse(expression, adjective, free, fake, informal)
2
spontaneous(adjective, free, simple, fake, informal)
2
tossed off(expression, adjective, free, informal, mock)
2
unpremeditated(adjective, free, spontaneous, unprepared)
2
unprepared(adjective, free, spontaneous, impromptu)
1
ad-lib(verb, adjective, adverb, make, fix)
1
spur-of-the-moment(adjective, free, spontaneous, unprepared)
1
ad hoc(expression, adjective, free, unrehearsed)
1
at first glance(expression, idiom, free, informal)
1
automatic(adjective, free, informal, impulsive)
1
autoschediastic(adjective, free, impulsive, spontaneous)
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APASmart Define. (2013). improv thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/improv/thesaurus/synonyms
ChicagoSmart Define. 2013. "improv thesaurus" https://smartdefine.org/improv/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2013, improv thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/improv/thesaurus/synonyms>.
MLASmart Define. "improv thesaurus" 17 June 2013. Web. 27 September 2026. <https://smartdefine.org/improv/thesaurus/synonyms>