42 entries under free topic. ×

16
impromptu(adjective, adverb, ready, spontaneous)
13
offhand(adjective, ready, casual, spontaneous)
13
spontaneous(adjective, ready, impromptu, unplanned)
12
unplanned(adjective, ready, casual, unqualified)
11
extempore(adjective, spontaneous, impromptu, unplanned)
11
unpremeditated(adjective, spontaneous, impromptu, unplanned)
10
improvised(adjective, ready, spontaneous, impromptu)
8
unrehearsed(adjective, ready, spontaneous, impromptu)
8
off the cuff(expression, adjective, idiom, ready)
7
ad-lib(adjective, ready, spontaneous, impromptu)
7
makeshift(adjective, simple, natural, unrefined)
6
ad lib(expression, adjective, informal, unrehearsed)
6
casual(adjective, impulsive, spontaneous, impromptu)
6
extemporary(adjective, casual, impulsive, spontaneous)
6
spur-of-the-moment(adjective, spontaneous, impromptu, unrehearsed)
6
unstudied(adjective, casual, spontaneous, impromptu)
4
snap(informal, casual, impulsive, spontaneous)
2
ad hoc(expression, adjective, idiom, unplanned)
2
improv(adjective, casual, spontaneous, impromptu)
2
improviso(adjective, spontaneous, impromptu, unplanned)
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APASmart Define. (2015). unprepared thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/unprepared/thesaurus/synonyms
ChicagoSmart Define. 2015. "unprepared thesaurus" https://smartdefine.org/unprepared/thesaurus/synonyms (accessed September 29, 2026).
HarvardSmart Define 2015, unprepared thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/unprepared/thesaurus/synonyms>.
MLASmart Define. "unprepared thesaurus" 10 April 2015. Web. 29 September 2026. <https://smartdefine.org/unprepared/thesaurus/synonyms>