4
stuck(confused, lost, perplexed, bewildered, mystified)
4
taken aback(adjective, shock, commotion, astonishment)
4
thrown(adjective, upset, unsettled, confused, disturbed)
4
thunderstruck
3
abashed(distracted, dazed, disorganized, perturbed, perplexed)
3
astonished(verb, adjective)
3
astounded
3
at sea(expression, confused, distracted, disorganized, perturbed)
3
blank(adjective, dumbfounded)
3
daze
3
distraught(adjective, upset)
3
embarrassed
3
flabbergasted
3
fuddled
3
helpless
3
shocked
3
startled(adjective, shock, commotion, astonishment)
3
stumped(verb, confused, distracted, lost, disorganized)
3
stunned(verb, adjective)
3
surprised
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APASmart Define. (2015). nonplussed thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/nonplussed/thesaurus/synonyms
ChicagoSmart Define. 2015. "nonplussed thesaurus" https://smartdefine.org/nonplussed/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, nonplussed thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/nonplussed/thesaurus/synonyms>.
MLASmart Define. "nonplussed thesaurus" 13 April 2015. Web. 22 September 2026. <https://smartdefine.org/nonplussed/thesaurus/synonyms>