wimp out


[wimp] Informal.
a weak, ineffectual, timid person.
Verb phrases
wimp out,
to be or act like a wimp.
to show timidity or cowardice; chicken out.

1915–20, Americanism; origin uncertain; cf. whimper

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World English Dictionary
wimp (wɪmp)
informal See also wimp out a feeble ineffective person
[C20: of unknown origin]

WIMP (wɪmp)
acronym for
1.  windows, icons, menus (or mice), pointers: denoting a type of user-friendly screen display used on small computers: a WIMP system
2.  physics weakly interacting massive particle

wimp out
informal (intr, adverb) to fail to do or complete something through fear or lack of conviction

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Word Origin & History

1920 (but not attested again until 1960), perhaps a clipped form of whimper (cf whimp, 1549), perhaps influenced by J. Wellington Wimpy, comparatively unaggressive character in "Popeye" comics. Wimpy (adj.) is from 1967.
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Science Dictionary
WIMP   (wĭmp)  Pronunciation Key 
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
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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American Heritage
Abbreviations & Acronyms
  1. window, icon, menu, pointing [device]

  2. window, icon, mouse, pull-down [menu]

The American Heritage® Abbreviations Dictionary, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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