3 entries under expression topic. ×

23
without warning(idiom, adverb, unexpectedly, unawares)
17
out of the blue(idiom, adverb, unexpectedly, abruptly)
12
all at once(idiom, adverb, instantaneity, unexpectedly)
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APASmart Define. (2015). suddenly thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/suddenly/thesaurus/synonyms
ChicagoSmart Define. 2015. "suddenly thesaurus" https://smartdefine.org/suddenly/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, suddenly thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/suddenly/thesaurus/synonyms>.
MLASmart Define. "suddenly thesaurus" 13 April 2015. Web. 22 September 2026. <https://smartdefine.org/suddenly/thesaurus/synonyms>