mortal sin

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noun Roman Catholic Church.

a willfully committed, serious transgression against the law of God, depriving the soul of divine grace.

Compare venial sin.

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

Related Words for mortal sin

atrocity, disgrace, vice

British Dictionary definitions for mortal sin

mortal sin

noun

Christianity a sin regarded as involving total loss of graceCompare venial sin

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