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[e-stop-uh l] /ɛˈstɒp əl/
noun, Law.
a bar or impediment preventing a party from asserting a fact or a claim inconsistent with a position that party previously took, either by conduct or words, especially where a representation has been relied or acted upon by others.
1575-85; < Middle French estoupail stopper. See estop, -al2 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for estoppel
  • The elements of judicial estoppel are met in the instant case.
  • Collateral estoppel is applicable even if the previous litigation involved a different claim.
  • The elements of judicial estoppel have not been precisely defined in this circuit either.
  • All three requirements for collateral estoppel are satisfied in this case.
British Dictionary definitions for estoppel


(law) a rule of evidence whereby a person is precluded from denying the truth of a statement of facts he has previously asserted See also conclusion
Word Origin
C16: from Old French estoupail plug, from estoper to stop up; see estop
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 estoppel

1530s, from Old French estopail, literally "bung, cork," from estoper (see estop).

Online Etymology Dictionary, © 2010 Douglas Harper
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