1
rushing(violent, fast, quick, unexpected, sudden)
1
serendipitous
1
short
1
speedy
1
subitaneous(violent, fast, quick)
1
unadvertised
1
uncommon
1
uncontrolled(violent, fast, quick)
1
undesigned
1
undivined
1
undreamed-of(adjective, imagined)
1
undreamed of
1
undreamt of
1
unfamiliar
1
unguessed
1
unheard of(verb, phrasal verb, inexpectation)
1
unimagined
1
unintended
1
unlucky
1
unprecedented
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APASmart Define. (2015). unanticipated thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/unanticipated/thesaurus/synonyms
ChicagoSmart Define. 2015. "unanticipated thesaurus" https://smartdefine.org/unanticipated/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2015, unanticipated thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/unanticipated/thesaurus/synonyms>.
MLASmart Define. "unanticipated thesaurus" 13 April 2015. Web. 26 September 2026. <https://smartdefine.org/unanticipated/thesaurus/synonyms>