27 entries under adverb topic. ×

8
extempore(adjective, free, casual, spontaneous)
7
impromptu(noun, adjective, free, affected)
7
off the cuff(expression, adjective, idiom, free)
7
offhand(adjective, free, informal, casual)
7
extemporaneous(adjective, impulsive, spontaneous, unprepared)
5
ad libitum(expression, adjective, impulsive, unprepared)
4
unrehearsed(adjective, free, informal, impulsive)
3
extemporaneously(impromptu, spontaneously, improv)
3
improvised(adjective, free, impulsive, spontaneous)
3
spontaneously(impromptu, improv, extemporaneously)
2
at will(expression, adjective, impulsive, extemporaneous)
2
improv(verb, adjective, free, informal)
2
makeshift(adjective, free, informal, casual)
2
off-the-cuff(verb, adjective, produce, bear)
2
off the hip(expression, idiom, makeshift, spontaneously)
1
according to pleasure(expression, adjective, idiom, impulsive)
1
as one thinks best(expression, adjective, idiom, impulsive)
1
as one wishes(expression, adjective, idiom, impulsive)
1
made-up(adjective, free, informal, snap)
1
off top of head(expression, adjective, idiom, simple)
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APASmart Define. (2015). ad lib thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/ad_lib/thesaurus/synonyms
ChicagoSmart Define. 2015. "ad lib thesaurus" https://smartdefine.org/ad_lib/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, ad lib thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/ad_lib/thesaurus/synonyms>.
MLASmart Define. "ad lib thesaurus" 10 April 2015. Web. 22 September 2026. <https://smartdefine.org/ad_lib/thesaurus/synonyms>