48 entries under unsuspecting topic. ×

21
spontaneous(noun, adjective, free, fake, informal)
19
accidental(adjective, careless, chance, casual, planned)
17
unintentional(adjective, simple, natural, chance, casual)
15
chance(adjective, careless, casual, planned, erratic)
13
impromptu(adjective, free, simple, fake, informal)
12
haphazard(adjective, insignificant, chance, casual, irregular)
12
unwitting(adjective, careless, casual, planned, reckless)
10
offhand(noun, adjective, free, simple, fake)
7
involuntary(noun, adjective, simple, natural, casual)
6
unconscious(adjective, simple, natural, casual, impulsive)
5
aimless(adjective, insignificant, casual, irregular, senseless)
5
improvised(adjective, free, simple, fake, informal)
5
unmeant(adjective, planned, unknowing, unaware, unintentional)
4
ad-lib(adjective, free, simple, fake, informal)
4
ignorant(adjective, impulsive, unknowing, unaware)
4
unknowing(adjective, unaware, unintentional)
3
unaware(adjective, unqualified, unknowing, unready)
2
incognizant(unknowing, unaware)
2
surprised(unqualified, unready)
2
unready
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APASmart Define. (2015). unplanned thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/unplanned/thesaurus/synonyms
ChicagoSmart Define. 2015. "unplanned thesaurus" https://smartdefine.org/unplanned/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2015, unplanned thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/unplanned/thesaurus/synonyms>.
MLASmart Define. "unplanned thesaurus" 10 April 2015. Web. 26 September 2026. <https://smartdefine.org/unplanned/thesaurus/synonyms>