175 entries under adjective topic. ×

4
unpremeditated(careless, chance, casual, random)
3
aleatory
3
coincidental(chance, minor, secondary, related)
3
hit-or-miss(careless, chance, casual, random)
3
inconclusive(restricted, indirect, provisional, restrictive)
3
indeterminate
3
lucky(happy, uncertain, casual, beneficial)
3
slight(mean, small, unimportant, trivial)
3
superficial(mean, slight, small, unimportant)
3
superfluous
3
uncertain(chance, restricted, liable, unplanned)
3
unlooked-for
3
unpredictable
2
by-the-way(minor, related)
2
by the way(expression, idiom)
2
commonplace(slight, small, unimportant)
2
concurrent(minor, secondary, subsidiary, related)
2
eventual(ambiguous, rambling, circuitous, tortuous)
2
fluke(careless, casual, minor, related)
2
frivolous(mean, slight, small, unimportant)
10 years ago|15k views|share |citing 
APASmart Define. (2016). incidental thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/incidental/thesaurus/synonyms
ChicagoSmart Define. 2016. "incidental thesaurus" https://smartdefine.org/incidental/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2016, incidental thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/incidental/thesaurus/synonyms>.
MLASmart Define. "incidental thesaurus" 29 March 2016. Web. 26 September 2026. <https://smartdefine.org/incidental/thesaurus/synonyms>