circumlocution (n.)youdaoicibaDictYouDict[circumlocution 词源字典]
c. 1400, from Latin circumlocutionem (nominative circumlocutio) "a speaking around" (the topic), from circum- "around" (see circum-) + locutionem (nominative locutio) "a speaking," noun of action from past participle stem of loqui "to speak" (see locution). A loan-translation of Greek periphrasis (see periphrasis).[circumlocution etymology, circumlocution origin, 英语词源]