crap up


1 [krap]
an act of defecation.
Slang: Sometimes Vulgar.
nonsense; drivel.
falsehood, exaggeration, propaganda, or the like.
refuse; rubbish; junk; litter: Will you clean up that crap!
verb (used without object), crapped, crapping.
Vulgar. to defecate.
verb (used with object), crapped, crapping.
Slang: Sometimes Vulgar. to talk nonsense to; attempt to deceive.
Verb phrases
crap around, Slang: Sometimes Vulgar.
to behave in a foolish or silly manner.
to avoid work.
crap on, Slang: Sometimes Vulgar.
to treat badly, especially by humiliating, insulting, or slighting.
to cause misery, misfortune, or discomfort.
crap up, Slang: Sometimes Vulgar. to botch, ruin, or cheapen; make a mess of.

1375–1425; late Middle English crap chaff < Middle Dutch (not recorded until 16th century) krappe anything cut off or separated Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
crap1 (kræp)
1.  a losing throw in the game of craps
2.  another name for craps
[C20: back formation from craps]

crap2 (kræp)
1.  nonsense
2.  rubbish
3.  another word for faeces
vb , craps, crapping, crapped
4.  (intr) another word for defecate
usage  This word was formerly considered to be taboo, and it was labelled as such in previous editions of Collins English Dictionary. However, it has now become acceptable in speech, although some older or more conservative people may object to its use

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

"defecate" 1846 (v.), 1898 (n.), from one of a cluster of words generally applied to things cast off or discarded (e.g. "weeds growing among corn" (1425), "residue from renderings" (1490s), 18c. underworld slang for "money," and in Shropshire, "dregs of beer or ale"), all probably from M.E. crappe "grain
that was trodden underfoot in a barn, chaff" (c.1440), from M.Fr. crape "siftings," from O.Fr. crappe, from M.L. crappa, crapinum "chaff." Sense of "rubbish, nonsense" also first recorded 1898. Despite folk etymology insistence, not from Thomas Crapper (1837-1910) who was, however, a busy plumber and may have had some minor role in the development of modern toilets. The name Crapper is a northern form of Cropper (attested from 1221), an occupational surname, obviously, but the exact reference is unclear.
Online Etymology Dictionary, © 2010 Douglas Harper
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Slang Dictionary

crap definition

  1. n.
    dung; feces. (Often used as a milder replacement for shit. Usually objectionable.) : There's dog crap on my lawn!
  2. in.
    to defecate. (Usually objectionable.) : Your dog crapped on my lawn!
  3. n.
    nonsense; lies. (See also BS.) : Stop talking crap and get serious!
  4. n.
    junk; shoddy merchandise. : Send this crap back. I won't pay for it!
Dictionary of American Slang and Colloquial Expressions by Richard A. Spears.Fourth Edition.
Copyright 2007. Published by McGraw-Hill Education.
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American Heritage
Idioms & Phrases

crap up

  1. Burden or clutter up, as in Jane crapped up the garden with plastic pink flamingos. [c. 1946]

  2. Ruin or foul up, as in I've really crapped up this speech; can I just start over again? This idiom employs crap in the sense of "defecate." [Vulgar slang; c. 1950]

The American Heritage® Dictionary of Idioms by Christine Ammer.
Copyright © 1997. Published by Houghton Mifflin.
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