Definition of nonplus in US English:

nonplus

verb

[with object]
  • Surprise and confuse (someone) so much that they are unsure how to react.

    ‘Diane was nonplussed by such an odd question’
    • ‘The boys are nonplussed by his invasion into their lives, to say the least.’
    • ‘And coach Simon Jones was nonplussed by the record-breaking performance of the Australians.’
    • ‘Moreover, I am totally nonplussed by this statement.’
    • ‘Hoggard looked tired and slightly nonplussed by events, which were both understandable reactions.’
    • ‘And Jones was nonplussed by the record-breaking performance of the Australians.’
    • ‘No doubt middle class people will be nonplussed by my compliance with the doctor's wishes.’
    • ‘The word clearly nonplussed the interviewer, who interrupted the discussion to demand a definition.’
    • ‘Or would the man be so nonplussed by her weird action that he would just pretend it hadn't happened?’
    • ‘Alex walked out slowly, nonplussed by the lack of surprise at his arrival.’
    • ‘‘Lauding,’ as Gates calls such devastating word games, confuses Wole, who, at this point of his development, is ignorant of the nature of language performance intended to nonplus the audience.’
    • ‘Many of those involved in the negotiations are nonplussed by the assertion that their efforts have ‘come to nothing’.’
    • ‘Pip is nonplussed by how much they seem to hate him.’
    • ‘She seemed nonplussed by that statement, and ignored it.’
    • ‘The chair of the committee and my colleagues were nonplussed by the protest and several went to the open but draped windows to watch the street theatre.’
    • ‘Nasa was nonplussed by the suggestion yesterday.’
    • ‘The authorities, nonplussed by this silence, released the wife and reduced the accused son's sentence to banishment.’
    • ‘Similarly, a recent survey showed young Britons are nonplussed by German culture.’
    • ‘All of this is good news for Carlyle's family of investors, who seem nonplussed by the questions swirling around the firm.’
    confused, bewildered, bemused, puzzled, perplexed, baffled, stumped, mystified, stupefied, muddled, befuddled, fuddled, dumbfounded, at sea, at a loss, at sixes and sevens, thrown, thrown off balance, taken aback, disoriented, disconcerted, discomposed, troubled, discomfited, unnerved, shaken, shaken up, dazed, stunned, surprised, astonished, astounded
    View synonyms

noun

  • A state of being very surprised and confused.

Origin

Late 16th century: from Latin non plus ‘not more’. The noun originally meant ‘a state in which no more can be said or done’.

Pronunciation

nonplus

/nɑnˈpləs//nänˈpləs/