13 entries under accidental topic. ×

10
fortuitous(adjective, happy, chance, fortunate, opportune)
9
casual(adjective, chance, random, lucky, unplanned)
7
random(adjective, chance, lucky, unplanned)
7
chance(adjective, lucky, unplanned, unpremeditated)
6
lucky(adjective, fortunate, opportune, blessed)
5
incidental(adjective, chance, lucky, unplanned)
5
unforeseen(adjective, chance, lucky, unplanned)
4
unplanned(adjective, chance, lucky, unpremeditated)
1
contingent(chance, lucky, unplanned, unpremeditated)
1
fluky(adjective, chance, fortunate, lucky, unplanned)
1
fortunate(happy, useful, beneficial, advantageous, opportune)
1
odd(chance, lucky, unplanned, unpremeditated)
1
providential(happy, fortunate, opportune, lucky, blessed)
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APASmart Define. (2015). serendipitous thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/serendipitous/thesaurus/synonyms
ChicagoSmart Define. 2015. "serendipitous thesaurus" https://smartdefine.org/serendipitous/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2015, serendipitous thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/serendipitous/thesaurus/synonyms>.
MLASmart Define. "serendipitous thesaurus" 14 April 2015. Web. 26 September 2026. <https://smartdefine.org/serendipitous/thesaurus/synonyms>