35 entries under improvised topic. ×

8
extempore(adjective, adverb, free, casual, spontaneous)
7
impromptu(noun, adjective, adverb, free, affected)
7
offhand(adjective, adverb, free, informal, casual)
7
unprepared(adjective, free, informal, casual, snap)
6
unpremeditated(adjective, free, informal, casual, snap)
5
spontaneous(adjective, free, informal, snap, unprepared)
5
unplanned(adjective, free, informal, casual, unprepared)
4
unstudied(adjective, free, informal, casual, unprepared)
4
unrehearsed(adjective, adverb, free, informal, impulsive)
3
by ear(expression, adjective, free, informal, casual)
3
improviso(adjective, free, informal, mock, casual)
3
snap(adjective, free, informal, casual, unprepared)
3
spur-of-the-moment(adjective, free, informal, casual, snap)
2
ad hoc(expression, adjective, free, informal, casual)
2
improv(verb, adjective, adverb, free, informal)
2
makeshift(adjective, adverb, free, informal, casual)
2
off the top of head(expression, idiom, free, informal, casual)
2
tossed off(expression, adjective, free, create, informal)
1
at first glance(expression, idiom, free, informal, casual)
1
automatic(adjective, free, informal, casual, unprepared)
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APASmart Define. (2015). ad lib thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/ad_lib/thesaurus/synonyms
ChicagoSmart Define. 2015. "ad lib thesaurus" https://smartdefine.org/ad_lib/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, ad lib thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/ad_lib/thesaurus/synonyms>.
MLASmart Define. "ad lib thesaurus" 10 April 2015. Web. 23 September 2026. <https://smartdefine.org/ad_lib/thesaurus/synonyms>