11
extemporization(noun, speech, planned, prepared, improvised)
10
impromptu(noun, planned, impulse, prepared, invention)
5
stopgap(noun, help)
5
ad-lib(noun, planned, prepared, improvised)
5
device(noun, trick, scheme, maneuver, stratagem)
4
ad-libbing(noun, speech, naturalness, impulsiveness, extemporization)
4
extemporaneousness(noun, impulsiveness, unpreparedness)
4
extemporisation
4
temporary expedient(noun, expression, idiom)
3
makeshift
3
spontaneity(noun, speech, inspiration, naturalness, impulsiveness)
3
trump
3
unpreparedness(noun, unpreparedness)
2
expedient
2
fiction(noun, literature, nonfiction, story, creation)
2
improvision
2
invention(noun, literature, plan, development, system)
2
answer
2
arrangement(plan, development, system, creation, assembly)
2
artifice(trick, maneuver, stratagem)
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APASmart Define. (2015). improvisation thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/improvisation/thesaurus/synonyms
ChicagoSmart Define. 2015. "improvisation thesaurus" https://smartdefine.org/improvisation/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, improvisation thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/improvisation/thesaurus/synonyms>.
MLASmart Define. "improvisation thesaurus" 10 April 2015. Web. 20 September 2026. <https://smartdefine.org/improvisation/thesaurus/synonyms>