/ Dictionary / Index N nonplus: Meaning and Definition of Find definitions for: non•plus Pronunciation: (non-plus', non'plus), [key] — v., n. -plussedor-plused, -plus•singor-plus•ing, —v.t. to render utterly perplexed; puzzle completely. —n. a state of utter perplexity. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: nonplus (Thesaurus) non placet* nonpoint Related Content Daily Word Quiz: agitated Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language