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inviolable

[in-vahy-uh-luh-buh l]
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adjective
  1. prohibiting violation; secure from destruction, violence, infringement, or desecration: an inviolable sanctuary; an inviolable promise.
  2. incapable of being violated; incorruptible; unassailable: inviolable secrecy.

Origin of inviolable

First recorded in 1400–50; late Middle English word from Latin word inviolābilis. See in-3, violable
Related formsin·vi·o·la·bil·i·ty, in·vi·o·la·ble·ness, nounin·vi·o·la·bly, adverb
Can be confusedinviolable inviolate
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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British Dictionary definitions for inviolability

inviolable

adjective
  1. that must not or cannot be transgressed, dishonoured, or broken; to be kept sacredan inviolable oath
Derived Formsinviolability or inviolableness, nouninviolably, 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 inviolability

n.

1793, from inviolable + -ity.

inviolable

adj.

mid-15c., from Latin inviolabilis "inviolable, invulnerable," from in- "not, opposite of" (see in- (1)) + violabilis, from violare "to do violence to" (see violation). Related: Inviolably.

Online Etymology Dictionary, © 2010 Douglas Harper