Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

  

nonplussed

adjective
 
 
/ˌnɒnˈplʌst/ US  /ˌnɑːn-/

Definition

surprised, confused, and not certain how to react: I was completely nonplussed by his reply.SurprisedDoubt and ambivalenceHesitating
(Definition of nonplussed adjective from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
Focus on the pronunciation of nonplussed