15 entries under expression topic. ×

17
by chance(adjective, idiom, adverb, circumstance)
7
by accident(idiom, adverb, short, sudden)
2
by mistake(adjective, adverb, short, sudden)
1
as a by-product(idiom, adverb, casually, remotely)
1
by surprise(short, sudden, suddenly, unexpectedly)
1
off guard(short, sudden, suddenly, unexpectedly)
0
as luck would have it(idiom, adverb, unexpectedly, fortunately)
0
by luck
0
by the bye
0
by the way(verb, phrasal verb)
0
on the hop(idiom, suddenly, unexpectedly, unawares)
0
without delay(suddenly, unexpectedly, unawares)
0
without hesitation(suddenly, unexpectedly, unawares)
0
without intention
0
without warning(suddenly, unexpectedly, unawares, astonishingly)
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APASmart Define. (2015). accidentally thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/accidentally/thesaurus/synonyms
ChicagoSmart Define. 2015. "accidentally thesaurus" https://smartdefine.org/accidentally/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, accidentally thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/accidentally/thesaurus/synonyms>.
MLASmart Define. "accidentally thesaurus" 14 April 2015. Web. 20 September 2026. <https://smartdefine.org/accidentally/thesaurus/synonyms>