unassailable

[ uhn-uh-sey-luh-buh l ]
/ ˌʌn əˈseɪ lə bəl /

adjective

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 formsun·as·sail·a·bil·i·ty, un·as·sail·a·ble·ness, nounun·as·sail·a·bly, adverb
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for unassailable

British Dictionary definitions for unassailable

unassailable

/ (ˌʌnəˈseɪləbəl) /

adjective

not able to be attacked
undeniable or irrefutable
Derived Formsunassailableness, noununassailably, 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 unassailable

unassailable


adj.

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

Online Etymology Dictionary, © 2010 Douglas Harper