CARDINAL SIN


Meaning of CARDINAL SIN in English

noun

1.

(sometimes humorous ) an action that is a serious mistake or that other people disapprove of :

He committed the cardinal sin of criticizing his teammates.

2.

a serious sin in the Christian Church

Oxford Advanced Learner's English Dictionary.      Оксфордский английский словарь для изучающик язык на продвинутом уровне.