put the kibosh on

kibosh

[kahy-bosh, ki-bosh]
noun Informal.
Idioms
2.
put the kibosh on, to put an end to; squelch; check: Another such injury may put the kibosh on her athletic career.

Origin:
1830–40; of obscure origin

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Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
kibosh or slang kybosh (ˈkaɪˌbɒʃ)
 
n
1.  put the kibosh on to put a stop to; prevent from continuing; halt
 
vb
2.  (tr) to put a stop to
 
[C19: of unknown origin]
 
kybosh or slang kybosh
 
n
 
vb
 
[C19: of unknown origin]

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Etymonline
Word Origin & History

kibosh
1836, kye-bosk, in slang phrase put the kibosh on, of unknown origin, despite intense speculation. Looks Yiddish, but origin in early 19c. English slang seems to argue against this. One candidate is Ir. caip bháis, caipín báis "cap of death," sometimes said to be the black cap a
judge would don when pronouncing a death sentence, but in other sources identified as a gruesome method of execution "employed by Brit. forces against 1798 insurgents" [Bernard Share, "Slanguage, A Dictionary of Irish Slang"]. Or it may somehow be connected with Turkish bosh (see bosh).
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Idioms & Phrases

put the kibosh on

Restrain or check something, as in The rain put the kibosh on our beach party, or The boss put the kibosh on the whole project. The word kibosh has been used in English since the first half of the 1800s and its origin is unknown.

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