Synonyms|74Antonyms|10|Broader|1Narrower|0Related|252
12
unexpected
9
unheralded(adjective, unexpected, disclosed)
9
unanticipated(adjective, secret, unexpected, unrevealed, disclosed)
7
unpredicted(adjective, unexpected)
6
unforeseen(adjective, secret)
6
precipitate
6
sudden
5
abrupt
3
quick
2
hasty
2
spontaneous
2
unforeseeable
2
unlooked-for
2
without warning(expression, adjective, unexpected)
1
surprise(adjective, secret, disclosed)
1
unplanned
1
extraordinary
1
snappy
1
improbable
1
impromptu(adjective, unexpected)
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APASmart Define. (2015). unannounced thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/unannounced/thesaurus/synonyms
ChicagoSmart Define. 2015. "unannounced thesaurus" https://smartdefine.org/unannounced/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2015, unannounced thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/unannounced/thesaurus/synonyms>.
MLASmart Define. "unannounced thesaurus" 13 April 2015. Web. 21 September 2026. <https://smartdefine.org/unannounced/thesaurus/synonyms>