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[ir-i-mis-uh-buh l]
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  1. not remissible; unpardonable, as a sin.
  2. unable to be remitted or postponed, as a duty.
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Origin of irremissible

First recorded in 1375–1425; late Middle English word from Late Latin word irremissibilis. See ir-2, remissible
Related formsir·re·mis·si·bil·i·ty, ir·re·mis·si·ble·ness, nounir·re·mis·si·bly, adverb
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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British Dictionary definitions for irremissible


  1. unpardonable; inexcusable
  2. that must be done, as through duty or obligation
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Derived Formsirremissibility or irremissibleness, nounirremissibly, 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