37 entries under unplanned topic. ×

21
impulsive(noun, adjective, rude, careless, natural)
17
extemporaneous(noun, adjective, impulsive, planned, impulse)
11
extempore(adjective, free, planned, spontaneous, impromptu)
10
inadvertent(adjective, careless, casual, thoughtless, unwise)
10
unintended(adjective, rude, careless, chance, casual)
10
unprepared(adjective, free, spontaneous, impromptu)
9
undesigned(adjective, planned, intention, unintentional)
8
unconscious(adjective, careless, natural, casual, thoughtless)
4
ad-lib(adjective, spontaneous, unprepared, impromptu)
4
unforeseen(adjective, chance, intention, accidental)
3
extemporized(adjective, spontaneous, unprepared, unrehearsed)
3
serendipitous(adjective, chance)
3
unarranged(adjective, spontaneous, unprepared, unrehearsed)
3
undevised(adjective, unintentional, accidental, inadvertent)
2
adventitious(adjective, chance, haphazard, accidental)
2
off-the-cuff(adjective, chance, spontaneous, unprepared, impromptu)
2
unthought(accidental, inadvertent)
1
contingent(chance, casual, random, haphazard)
1
erratic(careless, chance, casual, arbitrary)
1
fluky(chance, casual, random, haphazard)
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APASmart Define. (2015). unpremeditated thesaurus. Retrieved September 30, 2026, from https://smartdefine.org/unpremeditated/thesaurus/synonyms
ChicagoSmart Define. 2015. "unpremeditated thesaurus" https://smartdefine.org/unpremeditated/thesaurus/synonyms (accessed September 30, 2026).
HarvardSmart Define 2015, unpremeditated thesaurus, Smart Define, viewed 30 September, 2026, <https://smartdefine.org/unpremeditated/thesaurus/synonyms>.
MLASmart Define. "unpremeditated thesaurus" 10 April 2015. Web. 30 September 2026. <https://smartdefine.org/unpremeditated/thesaurus/synonyms>