34 entries under adjective topic. ×

6
spontaneous(impulsive, willing, planned)
5
unpremeditated
3
unplanned(deliberate, spontaneous)
3
accidental(deliberate, spontaneous, unexpectedly)
3
casual(chance, spontaneous, random)
3
extemporaneous(improvised, rehearsed)
2
inadvertent
2
involuntary
2
unintentional
2
unwitting
1
automatic
1
fortuitous
1
impromptu(adverb, unrehearsed, improvised)
1
incidental
1
offhand
1
unintended
0
abrupt
0
adventitious
0
careless
0
cursory
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APASmart Define. (2015). premeditated thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/premeditated/thesaurus/antonyms
ChicagoSmart Define. 2015. "premeditated thesaurus" https://smartdefine.org/premeditated/thesaurus/antonyms (accessed September 26, 2026).
HarvardSmart Define 2015, premeditated thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/premeditated/thesaurus/antonyms>.
MLASmart Define. "premeditated thesaurus" 10 April 2015. Web. 26 September 2026. <https://smartdefine.org/premeditated/thesaurus/antonyms>