definitions

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.

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RELATED WORDS

atrocity, disgrace, vice

Nearby words

morsel, mort, mortadella, mortal, mortal mind, mortal sin, mortal sin/venial sin, mortality, mortality rate, mortality table, mortally
Compare venial sin.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

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