nonplus

Definitions

To cause someone to be so surprised, confused, or bewildered that they are unsure how to react.

A state of utter perplexity or confusion.

Examples

The unexpected question seemed to nonplus the candidate, leaving him silent for several moments.

I was completely nonplussed by her sudden decision to quit the job without any explanation.

Synonyms

baffle bewilder confound perplex puzzle stump dumbfound

Antonyms

clarify enlighten explain clear up resolve understand comprehend