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verb (used with object)
  1. to expose to danger; imperil: It was foolish to endanger your life in that way.
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Origin of endanger

late Middle English word dating back to 1400–50; see origin at en-1, danger
Related formsen·dan·ger·ment, noun


See more synonyms for endanger on Thesaurus.com
threaten, jeopardize, hazard, risk.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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British Dictionary definitions for endanger


  1. (tr) to put in danger or peril; imperil
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Derived Formsendangerment, noun
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

Word Origin and History for endanger


late 15c., from en- (1) "make, put in" + danger. Related: Endangered; endangering. Endangered species first recorded 1964.

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Online Etymology Dictionary, © 2010 Douglas Harper