RUDE/IMPOLITERUDE/OBSCENEtoo shocking or embarrassing to talk about 〔因太震惊或尴尬而〕说不出口的
unmentionable scandals
难以启齿的丑闻
Examples from the Corpus
unmentionable• This behaviour was unmentionable a few years before, although it probably did take place.• Stalin had long been unmentionable and Volkogonov was said to be using closed secretarchives.• She hoped she hadn't caught an unmentionabledisease from her visit to the news-theatre.• Let us begin with a few simple, crucial, and apparently unmentionable facts about a typical high-school classroom.• Divorce, desertion, and illegitimacy were considered almost unmentionablescandals.• Miguelito yelled up that the man should do something unmentionable to himself.