mortal sin

American  

noun

Roman Catholic Church.

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

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mortal sin British  

noun

1. Christianity a sin regarded as involving total loss of grace Compare venial sin

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Example Sentences

See Examples For:

mortal sin

That would be considered a mortal sin by the vast majority of football fandom.

From BBC ● Mar. 29, 2026

“Normally, I’m like, ‘I don’t want to do that,’” says Jackman, over Zoom from a New York hotel room, as if he’s confessing a mortal sin.

From Los Angeles Times ● Nov. 19, 2025

A dish of spaghetti or macaroni that is too soft is thought of as a mortal sin, and in Italy would justify sending the food back to the kitchen, although that rarely happens.

From Salon ● Jan. 4, 2023

Most of us have been taught from a young age that failing to stretch before or after exercising is akin to a mortal sin.

From Seattle Times ● Dec. 26, 2022

“I suppose the moral is,” said Arthur, “that you must not commit mortal sin, even if twelve lives depend upon it Dogmatically speaking, I believe that is sound.”

From "The Once and Future King" by T. H. White