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afoul

[uh-foul] /əˈfaʊl/
adverb, adjective
1.
in a state of collision or entanglement:
a ship with its shrouds afoul.
Idioms
2.
run / come / fall afoul of,
  1. to become entangled with:
    The boat ran afoul of the seaweed.
  2. to come into conflict with:
    The business had fallen afoul of the new government regulations.
Origin
1800-1810
1800-10, Americanism; a-1 + foul
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for most afoul

afoul

/əˈfaʊl/
adverb, adjective (postpositive)
1.
(usually foll by of) in or into a state of difficulty, confusion, or conflict (with)
2.
(often foll by of) in or into an entanglement or collision (with) (often in the phrase run afoul of): a yacht with its sails afoul, the boat ran afoul of a steamer
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for most afoul

afoul

adv.

"entangled," 1809, originally nautical, now mainly in phrase to run afoul of; from a- (1) + foul.

Online Etymology Dictionary, © 2010 Douglas Harper
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