10 entries under adverb topic. ×

51
abruptly(right, fast, straight, bang)
40
unexpectedly(unawares, abruptly, inexpectation, surprisingly)
24
instantaneously(instantaneity, earliness, inexpectation)
23
quickly(adjective, now, hastily, unexpectedly)
23
without warning(expression, idiom, unexpectedly, unawares)
17
out of the blue(expression, idiom, unexpectedly, abruptly)
15
hastily(unexpectedly, impulsively, rashly)
14
immediately(instantaneity, unexpectedly, earliness)
14
surprisingly(unexpectedly, unawares, ignorantly, inexpectation)
12
all at once(expression, idiom, instantaneity, unexpectedly)
11 years ago|10k views|share |citing 
APASmart Define. (2015). suddenly thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/suddenly/thesaurus/synonyms
ChicagoSmart Define. 2015. "suddenly thesaurus" https://smartdefine.org/suddenly/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, suddenly thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/suddenly/thesaurus/synonyms>.
MLASmart Define. "suddenly thesaurus" 13 April 2015. Web. 23 September 2026. <https://smartdefine.org/suddenly/thesaurus/synonyms>