34 entries under adjective topic. ×

11
spontaneous(impulsive, willing)
10
unplanned
7
accidental(deliberate, unexpectedly)
6
offhand(careless, careful, abrupt, extemporaneous)
4
extemporaneous(improvised, rehearsed)
4
eye-opening
2
ad-lib(adverb, manner, rehearsed)
2
impromptu(adverb, deliberate, unrehearsed, improvised)
2
inadvertent
1
casual(deliberate, chance, random)
1
chance(accidental, unforeseeable)
1
extemporary
1
fortuitous(lucky, accidental)
1
improvised
1
haphazard(organization, plan)
1
rash(reasonable, sensible, careless, impulsive)
0
impulsive
0
uncivilised
0
automatic
0
barbarian
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APASmart Define. (2016). planned thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/planned/thesaurus/antonyms
ChicagoSmart Define. 2016. "planned thesaurus" https://smartdefine.org/planned/thesaurus/antonyms (accessed September 23, 2026).
HarvardSmart Define 2016, planned thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/planned/thesaurus/antonyms>.
MLASmart Define. "planned thesaurus" 26 February 2016. Web. 23 September 2026. <https://smartdefine.org/planned/thesaurus/antonyms>