a weak, ineffectual, timid person.
- to be or act like a wimp.
- to show timidity or cowardice; chicken out.
Origin of wimp
; origin uncertain; cf. whimper
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Related Words for wimp outbalk
British Dictionary definitions for wimp out
(intr, adverb) informal to fail to do or complete something through fear or lack of conviction
Derived Formswimpish or wimpy, adjective informal a feeble ineffective personSee also wimp out
Word Origin for wimp
C20: of unknown origin
windows, icons, menus (or mice), pointers: denoting a type of user-friendly screen display used on small computersa WIMP system
physics weakly interacting massive particle
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Word Origin and History for wimp out
1920 (but not attested again until 1960), perhaps a clipped form of whimper (cf whimp, 1540s), perhaps influenced by J. Wellington Wimpy, comparatively unaggressive character in "Popeye" comics.
1986, with out (adv.), from wimp (n.). Related: Wimped; wimping.
Online Etymology Dictionary, © 2010 Douglas Harper
Short for weakly interacting massive particle. Any of various hypothetical particles, some predicted by certain theories such as supersymmetry, which interact with other particles by the force of gravity alone. WIMPs are considered by some scientists to be candidates for the dark matter that makes up much of the mass of the universe.
The American Heritage® Science Dictionary
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