5
unconscious(adjective, careless, casual, ignorant, hidden)
4
accessory
4
accident(noun, not on purpose)
4
dispensable
4
extrinsic(adjective, extrinsicality)
4
eye-opening(adjective, amazing, astonishing, astounding, dumbfounding)
4
indirect
4
inessential(adjective, casual, useless, extra, worthless)
4
stray
4
uncaused(adjective, chance 2)
4
undetermined(adjective, chance 2)
4
unessential(adjective, casual, useless, extra, worthless)
4
unlooked-for
4
unnecessary(adjective, casual, useless, extra, worthless)
3
accidentally
3
circumstantial
3
arbitrary(adjective, careless, chance, casual, irregular)
3
collateral
3
expendable
3
fatal
11 years ago|13k views|share |citing 
APASmart Define. (2015). accidental thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/accidental/thesaurus/synonyms
ChicagoSmart Define. 2015. "accidental thesaurus" https://smartdefine.org/accidental/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, accidental thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/accidental/thesaurus/synonyms>.
MLASmart Define. "accidental thesaurus" 10 April 2015. Web. 23 September 2026. <https://smartdefine.org/accidental/thesaurus/synonyms>