30 entries under chance topic. ×

21
accidental(adjective, secondary, irrelevant, repugnant)
18
fortuitous(adjective, happy, fortunate, desirable)
17
incidental(adjective, minor, surface, secondary)
16
casual(adjective, secondary, subsidiary, random)
16
random(adjective, secondary, subsidiary, haphazard)
9
contingent(adjective, secondary, circumstance, subsidiary)
9
unintentional(adjective, haphazard, unplanned, accidental)
7
haphazard(adjective, accidental, unintended)
6
fluky(adjective, fortunate, haphazard, unplanned)
5
occasional(adjective, secondary, subsidiary, related)
4
serendipitous(adjective, happy, fortunate, opportune)
4
unexpected(adjective, unplanned, unintentional, accidental)
4
unforeseen(adjective, unplanned, unintentional, accidental)
4
unplanned(adjective, planned, haphazard, unintentional)
2
odd(adjective, secondary, subsidiary, related)
2
unpremeditated(adjective, haphazard, unplanned, accidental)
1
irregular(secondary, subsidiary, related, haphazard)
1
uncertain(likely, desirable, unplanned, potential)
1
unintended(adjective, unplanned, unintentional, accidental)
0
by chance(expression, unplanned, unpremeditated)
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APASmart Define. (2015). adventitious thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/adventitious/thesaurus/synonyms
ChicagoSmart Define. 2015. "adventitious thesaurus" https://smartdefine.org/adventitious/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, adventitious thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/adventitious/thesaurus/synonyms>.
MLASmart Define. "adventitious thesaurus" 10 April 2015. Web. 25 September 2026. <https://smartdefine.org/adventitious/thesaurus/synonyms>