54 entries under adjective topic. ×

4
unforeseen(chance, intention, unplanned, unintentional)
3
extemporaneous(chance, unplanned, unintentional, accidental)
3
haphazard(unknowing, unaware, unplanned, unintentional)
3
uncaused
3
unstudied
2
adventitious(chance, unplanned, unintentional, accidental)
2
careless(thoughtless, inconsiderate)
2
erratic(chance, unplanned, unintentional, accidental)
2
heedless(careless, thoughtless, inconsiderate)
2
impulsive(rude, careless, chance, thoughtless)
2
inattentive(ignorant, hidden, unconscious, unaware)
2
incidental(chance, unplanned, unintentional, unpremeditated)
2
instinctive(rude, careless, thoughtless, unwise)
2
purposeless(unplanned, unintentional, accidental, inadvertent)
2
unmotivated
1
coincidental
1
feckless(rude, careless, thoughtless, unwise)
1
serendipitous(chance, unplanned, unpremeditated)
1
unheeding(careless, thoughtless, unwise, ignorant)
1
unthought(unplanned, unintentional, accidental, inadvertent)
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APASmart Define. (2015). unintended thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/unintended/thesaurus/synonyms
ChicagoSmart Define. 2015. "unintended thesaurus" https://smartdefine.org/unintended/thesaurus/synonyms (accessed September 29, 2026).
HarvardSmart Define 2015, unintended thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/unintended/thesaurus/synonyms>.
MLASmart Define. "unintended thesaurus" 13 April 2015. Web. 29 September 2026. <https://smartdefine.org/unintended/thesaurus/synonyms>