31 entries under arbitrary topic. ×

26
casual(adjective, careless, chance, extra, surprise)
18
incidental(adjective, careless, chance, casual, minor)
18
unexpected(adjective, careless, chance, casual, shocking)
14
unpremeditated(adjective, careless, chance, casual, planned)
5
hit-or-miss(adjective, careless, casual, erratic, frivolous)
5
unconscious(adjective, careless, casual, ignorant, hidden)
3
purposeless(adjective, careless, chance, casual, erratic)
2
loose(careless, casual)
2
unorganized(adjective, careless, casual)
1
designless(careless, chance, casual, haphazard)
1
desultory(careless, chance, casual, erratic, frivolous)
1
erratic(careless, chance, casual, frivolous, haphazard)
1
fluke(careless, casual, secondary, subsidiary, related)
1
irregular(careless, chance, casual, secondary, random)
1
offhand(adjective, careless, chance, casual)
1
reckless(careless, casual)
1
slapdash(careless, chance, casual, haphazard)
1
slipshod(careless, casual, random)
1
spontaneous(adjective, careless, chance, casual, erratic)
1
sudden(extraordinary, careless, wonderful, casual, shocking)
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APASmart Define. (2015). accidental thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/accidental/thesaurus/synonyms
ChicagoSmart Define. 2015. "accidental thesaurus" https://smartdefine.org/accidental/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2015, accidental thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/accidental/thesaurus/synonyms>.
MLASmart Define. "accidental thesaurus" 10 April 2015. Web. 21 September 2026. <https://smartdefine.org/accidental/thesaurus/synonyms>