Nonplussed

Pronunciation: /nɑːnˈplʌst/

Nonplussed (adjective)

  1. feeling unsure or surprised, not knowing how to react.
  2. not worried or affected by something surprising or difficult.

Examples

  • She was nonplussed by the unexpected question.
  • He looked nonplussed when the lights went out suddenly.

Common collocations: nonplussed expression, seem nonplussed, leave someone nonplussed, remain nonplussed, appear nonplussed

Synonyms of Nonplussed

Formal

Neutral

Informal

Antonyms of Nonplussed

  • when describing a calm and collected state
  • when describing a state of confidence