22 entries under spontaneous topic. ×

5
improvised(adjective, informal, unplanned, unrehearsed)
4
ad lib(expression, adjective, idiom, unprepared)
4
extemporaneous(adjective, fake, informal, unrehearsed)
4
unplanned(adjective, informal, unprepared, unrehearsed)
4
unpremeditated(adjective, unprepared, unplanned, unrehearsed)
4
unprepared(adjective, informal, unplanned, unrehearsed)
4
unstudied(adjective, unprepared, unplanned, unrehearsed)
3
extempore(adjective, informal, unprepared, unrehearsed)
3
makeshift(adjective, informal, unplanned, unpremeditated)
2
ad-lib(adjective, fake, informal, unprepared)
2
offhand(adjective, unprepared, unplanned, unrehearsed)
2
unarranged(unprepared, unplanned, unrehearsed, unpremeditated)
2
unrehearsed(adjective, informal, unprepared, unplanned)
1
ad hoc(expression, idiom, informal, unprepared)
1
improviso(fake, unprepared, unplanned, unrehearsed)
1
made-up(adjective, informal, unplanned, unpremeditated)
1
off-the-cuff(adjective, informal, unprepared, unplanned)
1
spur-of-the-moment(unprepared, unplanned, unrehearsed, unpremeditated)
0
Band-Aid(unplanned, unpremeditated)
0
autoschediastic(unplanned, unpremeditated)
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APASmart Define. (2015). extemporized thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/extemporized/thesaurus/synonyms
ChicagoSmart Define. 2015. "extemporized thesaurus" https://smartdefine.org/extemporized/thesaurus/synonyms (accessed September 29, 2026).
HarvardSmart Define 2015, extemporized thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/extemporized/thesaurus/synonyms>.
MLASmart Define. "extemporized thesaurus" 13 April 2015. Web. 29 September 2026. <https://smartdefine.org/extemporized/thesaurus/synonyms>