31 entries under adjective topic. ×

12
unprepared
5
ad-lib(adverb, manner, rehearsed)
4
unwilling(mood, willing, unable)
4
extemporaneous(improvised, rehearsed)
4
offhand
3
impromptu
2
unstudied
2
unready
1
disinclined
1
unable
1
unpremeditated
0
unqualified(suitable, incompetent, prepared)
0
spontaneous
0
unplanned
0
breezy
0
ignorant
0
indefinite
0
neglectful
0
occasional
0
premature(impulsive, rash)
<12>
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APASmart Define. (2015). prepared thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/prepared/thesaurus/antonyms
ChicagoSmart Define. 2015. "prepared thesaurus" https://smartdefine.org/prepared/thesaurus/antonyms (accessed September 25, 2026).
HarvardSmart Define 2015, prepared thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/prepared/thesaurus/antonyms>.
MLASmart Define. "prepared thesaurus" 6 October 2015. Web. 25 September 2026. <https://smartdefine.org/prepared/thesaurus/antonyms>