according to the Catholic Church something you do that is so bad that you will be punished for ever after death unless you do what is necessary to be forgiven
Synonyms and related words
Roman Catholicism
altar boy
Anglo-Catholic
apostolic
mortal sin
noun countable
US
Word Forms
singular
mortal sin
plural
mortal sins
DEFINITIONS1
1
according to the Catholic Church something you do that is so bad that you will be punished for ever after death unless you do what is necessary to be forgiven