Synonyms|50Antonyms|3|Broader|0Narrower|0Related|5
1
unprepared(adverb, suddenly, unexpectedly, unawares, ignorantly)
1
unready(adverb, suddenly, unexpectedly, unawares, ignorantly)
1
unwittingly(adverb, short, sudden, suddenly, unexpectedly)
0
adventitiously
0
all at once(expression, idiom, ignorantly, unanticipatedly, uniformed)
0
all of a sudden(expression, idiom, ignorantly, unanticipatedly, uniformed)
0
amazement
0
asleep at switch(expression, idiom, ignorantly, unwatchful)
0
asleep at the switch(expression, idiom, ignorantly, unwatchful)
0
astonish
0
asudden(ignorantly, unanticipatedly, uniformed)
0
confound
0
flat-footed(ignorantly, unwatchful)
0
forthwith(adverb, suddenly, unexpectedly, unawares, abruptly)
0
in the dark(expression, idiom, unanticipatedly, uniformed)
0
innocently
0
marvel
0
naively
0
not on the job(expression, idiom, ignorantly, unwatchful)
0
obliviously
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APASmart Define. (2015). by surprise thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/by_surprise/thesaurus/synonyms
ChicagoSmart Define. 2015. "by surprise thesaurus" https://smartdefine.org/by_surprise/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2015, by surprise thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/by_surprise/thesaurus/synonyms>.
MLASmart Define. "by surprise thesaurus" 14 April 2015. Web. 28 September 2026. <https://smartdefine.org/by_surprise/thesaurus/synonyms>