25 entries under unplanned topic. ×

17
extemporaneous(adjective, adverb, impulsive, prepared, spontaneous)
11
extempore(adjective, free, prepared, spontaneous, impromptu)
9
unprepared(adjective, free, ready, spontaneous, impromptu)
6
impulsive(adjective, impulsive, spontaneous, unprompted)
6
off-the-cuff(adjective, adverb, informal, impulsive, prepared)
3
unscripted(adjective, spontaneous, unprepared, impromptu)
2
ad hoc(expression, adjective, idiom, free, casual)
2
ad libitum(expression, adjective, idiom, adverb, informal)
2
extemporized(adjective, informal, spontaneous, unprepared)
2
improviso(adjective, free, casual, spontaneous, unprepared)
1
according to pleasure(expression, informal, impulsive, extemporaneous)
1
as one thinks best(expression, informal, impulsive, extemporaneous)
1
shot from the hip(expression, adjective, idiom, unprepared)
1
whipped up(expression, adjective, unprepared)
1
winged(adjective, unqualified, unprepared, unsuspecting)
0
Band-Aid(spontaneous, unpremeditated)
0
dashed off(expression, adjective, unprepared)
0
extemporize(informal, off-the-cuff, extemporise)
0
faked(adjective, unprepared)
0
fly-by-night(spontaneous, unpremeditated)
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APASmart Define. (2015). unrehearsed thesaurus. Retrieved October 1, 2026, from https://smartdefine.org/unrehearsed/thesaurus/synonyms
ChicagoSmart Define. 2015. "unrehearsed thesaurus" https://smartdefine.org/unrehearsed/thesaurus/synonyms (accessed October 1, 2026).
HarvardSmart Define 2015, unrehearsed thesaurus, Smart Define, viewed 1 October, 2026, <https://smartdefine.org/unrehearsed/thesaurus/synonyms>.
MLASmart Define. "unrehearsed thesaurus" 14 April 2015. Web. 1 October 2026. <https://smartdefine.org/unrehearsed/thesaurus/synonyms>