61 entries under unplanned topic. ×

10
impromptu(adjective, adverb, simple, informal, natural)
9
extemporaneous(adjective, adverb, simple, informal, natural)
9
extempore(adjective, simple, informal, natural, straightforward)
9
offhand(adjective, adverb, simple, natural, chance)
8
ad-lib(verb, adjective, adverb, produce, simple)
7
improvised(adjective, adverb, simple, informal, natural)
7
unrehearsed(adjective, impulsive, prepared, impromptu)
4
spontaneous(adjective, simple, informal, natural, straightforward)
3
unprepared(adjective, informal, spontaneous, impromptu)
2
ad hoc(expression, adjective, informal, spontaneous, unprepared)
2
casual(adjective, simple, easy, plain, natural)
2
unpremeditated(adjective, chance, spontaneous, unprepared, impromptu)
2
unstudied(adjective, simple, natural, casual, impulsive)
1
accidental(chance, unpremeditated)
1
according to pleasure(expression, informal, impulsive, extemporaneous)
1
ad libitum(expression, adjective, adverb, informal)
1
as one thinks best(expression, informal, impulsive, extemporaneous)
1
as one wishes(expression, informal, impulsive, extemporaneous)
1
at will(expression, informal, impulsive, extemporaneous)
1
autoschediastic(adjective, spontaneous, unprepared, impromptu)
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APASmart Define. (2015). off-the-cuff thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/off-the-cuff/thesaurus/synonyms
ChicagoSmart Define. 2015. "off-the-cuff thesaurus" https://smartdefine.org/off-the-cuff/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, off-the-cuff thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/off-the-cuff/thesaurus/synonyms>.
MLASmart Define. "off-the-cuff thesaurus" 14 April 2015. Web. 25 September 2026. <https://smartdefine.org/off-the-cuff/thesaurus/synonyms>