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unassailable

[uhn-uh-sey-luh-buh l] /ˌʌn əˈseɪ lə bəl/
adjective
1.
not open to attack or assault, as by military force or argument:
unassailable fortifications; unassailable logic.
2.
not subject to denial or dispute:
Shakespeare's genius gives his works an unassailable position in world literature.
Origin
1590-1600
1590-1600; un-1 + assailable
Related forms
unassailability, unassailableness, noun
unassailably, adverb
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for un assailable

unassailable

/ˌʌnəˈseɪləbəl/
adjective
1.
not able to be attacked
2.
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 un assailable

unassailable

adj.

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

Online Etymology Dictionary, © 2010 Douglas Harper
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