ˌcardinal ˈsin BrE AmE noun [countable]
1 . informal something bad or stupid that you must avoid doing:
politicians who commit the cardinal sin of ignoring public opinion
2 . a serious ↑ sin in the Christian religion
ˌcardinal ˈsin BrE AmE noun [countable]
1 . informal something bad or stupid that you must avoid doing:
politicians who commit the cardinal sin of ignoring public opinion
2 . a serious ↑ sin in the Christian religion
Longman Dictionary of Contemporary English. Longman - Словарь современного английского языка. 2012