[uhn-uh-sey-luh-buh l]


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

Related Words for unassailably

unassailably, constantly, firmly, fixedly, rigidly

Examples from the Web for unassailably

Historical Examples of unassailably

  • It was respectable; it was unassailably effective; it was not included in the Commandments.

    The Pastor's Wife

    Elizabeth von Arnim

  • But definite, I think—utterly and unassailably definite—although quite Christian-scientifically foggy in its phrasing.

  • But definite, I think—utterly and unassailably definite—although quite Christian-Scientifically foggy in its phrasing.

    Christian Science

    Mark Twain (Samuel Clemens)

  • The girl smiled with pleasure, but Clarke remained so unassailably serious that Serviss was moved to further deeps of audacity.

  • Until faith in these fundamental truths has been unassailably established, no basis for Christianity has been secured.

    Browning and Dogma

    Ethel M. Naish

British Dictionary definitions for unassailably



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 unassailably



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

Online Etymology Dictionary, © 2010 Douglas Harper