38 entries under unprepared topic. ×

8
extempore(adjective, adverb, free, casual, spontaneous)
7
extemporaneous(adjective, adverb, impulsive, spontaneous)
5
ad libitum(expression, adjective, adverb, impulsive)
5
spontaneous(adjective, free, informal, snap)
5
unplanned(adjective, free, informal, casual)
4
unstudied(adjective, free, informal, casual)
4
extemporary(adjective, free, casual, spontaneous)
3
by ear(expression, adjective, free, informal, casual)
3
extemporized(adjective, spontaneous, unplanned, unrehearsed)
3
improvised(adjective, adverb, free, impulsive, spontaneous)
3
improviso(adjective, free, informal, mock, casual)
3
snap(adjective, free, informal, casual)
3
spur-of-the-moment(adjective, free, informal, casual, snap)
3
unarranged(adjective, spontaneous, unplanned, unrehearsed)
2
ad hoc(expression, adjective, free, informal, casual)
2
fake(verb, adjective, spontaneous, impromptu)
2
improv(verb, adjective, adverb, free, informal)
2
off-the-cuff(verb, adjective, adverb, produce, bear)
2
toss off(verb, expression, adjective, spontaneous)
2
toss out(expression, adjective, spontaneous, impromptu)
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APASmart Define. (2015). ad lib thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/ad_lib/thesaurus/synonyms
ChicagoSmart Define. 2015. "ad lib thesaurus" https://smartdefine.org/ad_lib/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, ad lib thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/ad_lib/thesaurus/synonyms>.
MLASmart Define. "ad lib thesaurus" 10 April 2015. Web. 25 September 2026. <https://smartdefine.org/ad_lib/thesaurus/synonyms>