cardinal sin
Longman Dictionary of Contemporary English 5++LDOCE 5++ˌcardinal ˈsin noun [countable] 1 informalSTUPID/NOT SENSIBLE something bad or stupid that you must avoid doing 〔必须避免的〕愚蠢的失误 politicians who commit the cardinal sin of ignoring public opinion 犯下忽视公众舆论这个大错的政治家2. RRCa serious sin in the Christian religion 〔基督教中的〕主罪，大罪
Examples from the Corpus
cardinal sin• Also, eating is not likely to be viewed as a cardinal sin.• Monotony was a cardinal sin for Victorian architects, just as it is the predominant defining characteristic of modern architecture.• In Gandhi's view, its cardinal sin is the way it tolerates untouchability.• Senators who commit the cardinal sin of ignoring public opinion will soon be out of office.• It's fairly entertaining to watch but commits the cardinal sin of not identifying individual players.• I made the cardinal sin in tennis.• All things were possible; anyone could get rich; the cardinal sin was doubt.ˌcardinal ˈsin nounChineseSyllable
avoid you that or must Corpus bad something stupid
cardinal sin
ˌcardinal ˈsin
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
noun [countable]1. informal something bad or stupid that you must avoid doing:
2. a serious sin in the Christian religion