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nonplus

American  
[non-pluhs] / nɒnˈplʌs /

verb (used with object)

nonplussed, nonplused, nonplussing, nonplusing
  1. to render utterly perplexed by something unexpected; puzzle completely.

    He nonplussed his questioners by answering in riddles.

    Synonyms:
    disconcert, confound, confuse, perplex
  2. to cause to feel indifferent, calm, or unexcited.

    The shoppers were entirely nonplussed by the disturbance in the street, continuing to gaze at window displays as they strolled along.


noun

  1. a state of utter perplexity.

    When the protagonist's wife suddenly disappears, he's at a nonplus and fights with two different feelings.

nonplus British  
/ nɒnˈplʌs /

verb

  1. (tr) to put at a loss; confound

    he was nonplussed by the sudden announcement

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

noun

  1. a state of utter perplexity prohibiting action or speech

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Usage

See nonplussed ( def. ).

Etymology

Origin of nonplus

First recorded in 1575–85; (noun) from Latin nōn plūs literally, “not more, no further,” that is, a state in which nothing more can be done

Explanation

To nonplus is to baffle or confuse someone to the point that they have nothing to say. Something weird and mysterious can nonplus you, like a play that is performed entirely by chickens. If you know a little French or Latin, you'll recognize that "non plus" means "no more." When something bewildering nonpluses you, there's no more you can say or do about it. A goal of getting poor grades, running with a bad crowd, and refusing to eat would leave your parents nonplussed. Sometimes people misuse nonplus to mean "unimpressed," but that's not correct: to nonplus is to puzzle, confuse, and dumbfound.

Keep Reading on Vocabulary.com

Vocabulary lists containing nonplus

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

But," says he, "I never was so put to the Nonplus in all my Days, as that General once put me in.

From Military Memoirs of Capt. George Carleton by Defoe, Daniel

Nonplus, non′plus, n. a state in which no more can be done or said: great difficulty.—v.t. to perplex completely, to puzzle:—pr.p. non′plussing; pa.t. and pa.p. non′plussed.

From Chambers's Twentieth Century Dictionary (part 3 of 4: N-R) by Various

Nonplus, quandary, strait, pass, pinch, pretty pass, stress, brunt; critical situation, crisis; trial, rub, emergency, exigency, scramble.

From Journalism for Women A Practical Guide by Bennett, Arnold