17 entries under extemporaneous topic. ×

2
ad-lib(adjective, adverb, manner, offhand, impromptu)
1
impromptu(adjective, adverb, offhand, spontaneously)
1
improvised(adjective, adverb, offhand, impromptu)
1
off the cuff(expression, idiom, impromptu, spontaneously)
1
off the hip(expression, idiom, offhand, impromptu, throwaway)
1
offhand(adjective, adverb, impromptu)
1
unrehearsed(adjective, adverb, offhand, impromptu)
0
extemporary(impromptu, throwaway)
0
extempore(impromptu, ad-lib)
0
informal
0
off the top of head(expression, idiom, impromptu, spontaneously)
0
spontaneous
0
spur-of-the-moment
0
throwaway
0
unpremeditated
0
unprepared
0
unstudied
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APASmart Define. (2013). without preparation thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/without_preparation/thesaurus/synonyms
ChicagoSmart Define. 2013. "without preparation thesaurus" https://smartdefine.org/without_preparation/thesaurus/synonyms (accessed September 29, 2026).
HarvardSmart Define 2013, without preparation thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/without_preparation/thesaurus/synonyms>.
MLASmart Define. "without preparation thesaurus" 19 May 2013. Web. 29 September 2026. <https://smartdefine.org/without_preparation/thesaurus/synonyms>