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[uhn-uh-sey-luh-buh l] /ˌʌn əˈseɪ lə bəl/
not open to attack or assault, as by military force or argument:
unassailable fortifications; unassailable logic.
not subject to denial or dispute:
Shakespeare's genius gives his works an unassailable position in world literature.
Origin of unassailable
1590-1600; un-1 + assailable
Related forms
unassailability, unassailableness, noun
unassailably, adverb Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the Web for unassailable
Contemporary Examples
Historical Examples
  • To be behind it is an unassailable patent of respectability.

    Diplomatic Days Edith O'Shaughnessy
  • "You're just about as satisfying to talk to as a stump," she paid tribute to his unassailable calm.

    Good Indian B. M. Bower
  • Burton's exalted position, however, as ethnologist and anthropologist, is unassailable.

  • That your communion was unassailable, would not prove that mine was indefensible.

    Apologia Pro Vita Sua John Henry Cardinal Newman
  • In his previous, always professional, meetings with criminals his position had been that of unassailable dominance.

British Dictionary definitions for unassailable


not able to be attacked
undeniable or irrefutable
Derived Forms
unassailableness, noun
unassailably, 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
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Word Origin and History for unassailable

1590s, from un- (1) "not" + assailable (see assail). Related: Unassailably.

Online Etymology Dictionary, © 2010 Douglas Harper
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