178 entries under adjective topic. ×

3
kinky(unusual, strange)
3
noteworthy(extraordinary, unusual, strange, exceptional)
3
out of the blue(adverb, surprising, unpredicted)
3
precipitant(violent, fast, fierce, quick)
3
prodigious(extraordinary, unusual, strange, exceptional)
3
serendipitous(chance, unplanned, unpremeditated)
3
sporadic
3
undreamed-of(unpredictable, imagined, unsolicited, uninvited)
3
unforeseeable
3
unordinary
3
unorthodox(extraordinary, unusual, strange, new)
3
unparalleled(extraordinary, unusual, strange, exceptional)
3
unpremeditated(passionate, violent, careless, casual)
3
unsuspected
3
untypical
2
arbitrary(careless, casual)
2
erratic(unusual, careless, strange, chance)
2
exotic(unusual, strange, new, unknown)
2
far-out(extraordinary, unusual, strange, exceptional)
2
impromptu(chance, unqualified, abrupt, rapid)
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APASmart Define. (2015). unexpected thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/unexpected/thesaurus/synonyms
ChicagoSmart Define. 2015. "unexpected thesaurus" https://smartdefine.org/unexpected/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, unexpected thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/unexpected/thesaurus/synonyms>.
MLASmart Define. "unexpected thesaurus" 13 April 2015. Web. 25 September 2026. <https://smartdefine.org/unexpected/thesaurus/synonyms>