Non·plus v. t. [imp. & p. p. Nonplused or Nonplussed; p. pr. & vb. n. Nonplusing or Nonplussing.] To puzzle; to confound; to perplex; to cause to stop by embarrassment.
He has been nonplused by Mr. Dry's desiring him to tell what it was that he endeavored to prove. --Spectator.
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nonplused
adj : filled with bewilderment; "at a loss to understand those
remarks"; "puzzled that she left without saying
goodbye" [syn: at a loss(p), nonplussed, puzzled]