irrefrangible

[ir-i-fran-juh-buh l]

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adjective

not to be broken or violated; inviolable: an irrefrangible rule of etiquette.

incapable of being refracted.

Origin of irrefrangible

First recorded in 1710–20; ir-² + refrangible

Related formsir·re·fran·gi·bil·i·ty, ir·re·fran·gi·ble·ness, nounir·re·fran·gi·bly, adverb

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Related Words for irrefrangible

durable, perpetual, immortal, unambiguous, precise, undeniable, convincing, indisputable, compelling, unmistakable, decisive, irrefutable, irrevocable, abiding, deathless, enduring, everlasting, immutable, imperishable, incorruptible

British Dictionary definitions for irrefrangible

irrefrangible

adjective

not to be broken or transgressed; inviolable

physics incapable of being refracted

Derived Formsirrefrangibility or irrefrangibleness, nounirrefrangibly, 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 irrefrangible

adj.

c.1719, "that cannot be broken," from assimilated form of in- "not, opposite of" (see in- (1)) + refrangible.