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Origin of unavoidable

1570–80; un-1 + avoidable
Related formsun·a·void·a·bil·i·ty, un·a·void·a·ble·ness, nounun·a·void·a·bly, adverb

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Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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British Dictionary definitions for unavoidable


  1. unable to be avoided; inevitable
  2. law not capable of being declared null and void
Derived Formsunavoidability or unavoidableness, noununavoidably, adverb
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 unavoidable

mid-15c., from un- (1) "not" + avoidable. Related: Unavoidably.

Online Etymology Dictionary, © 2010 Douglas Harper