32 entries under unplanned topic. ×

17
accidental(adjective, careless, chance, casual, planned)
16
unwitting(adjective, careless, casual, planned, ignorant)
15
chance(adjective, careless, casual, planned, unknowing)
14
casual(adjective, simple, natural, chance, impulsive)
13
involuntary(adjective, simple, natural, casual, impulsive)
12
unconscious(adjective, simple, natural, casual, impulsive)
9
adventitious(adjective, chance, haphazard, accidental)
6
purposeless(adjective, chance, planned, haphazard)
6
spontaneous(adjective, natural, chance, routine, impulsive)
6
undevised(adjective, planned, accidental, inadvertent)
6
unexpected(adjective, chance, planned, accidental)
6
unforeseen(adjective, chance, planned, intention)
5
impulsive(adjective, simple, natural, chance, casual)
4
fluky(adjective, chance, haphazard, accidental)
4
incidental(adjective, chance, haphazard, accidental)
3
contingent(chance, haphazard, accidental, unintended)
3
unthought(adjective, planned, accidental, inadvertent)
2
extemporaneous(adjective, simple, natural, chance, casual)
1
erratic(adjective, chance, planned, accidental)
1
extempore(adjective, simple, natural, chance, casual)
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APASmart Define. (2015). unintentional thesaurus. Retrieved September 30, 2026, from https://smartdefine.org/unintentional/thesaurus/synonyms
ChicagoSmart Define. 2015. "unintentional thesaurus" https://smartdefine.org/unintentional/thesaurus/synonyms (accessed September 30, 2026).
HarvardSmart Define 2015, unintentional thesaurus, Smart Define, viewed 30 September, 2026, <https://smartdefine.org/unintentional/thesaurus/synonyms>.
MLASmart Define. "unintentional thesaurus" 13 April 2015. Web. 30 September 2026. <https://smartdefine.org/unintentional/thesaurus/synonyms>