/ Dictionary / Index W wimp: Meaning and Definition of Find definitions for: wimp Pronunciation: (wimp), [key] —n. a weak, ineffectual, timid person. —v. to be or act like a wimp. to show timidity or cowardice; chicken out. WIMP Pronunciation: (wimp), [key] any of a group of weakly interacting elementary particles predicted by various unified field theories, as the W particle and Z-zero particle, that are characterized by relatively large masses. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: wimp (Thesaurus) wimmin wimple Related Content Daily Word Quiz: stringent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language