unquote (v.)youdaoicibaDictYouDict[unquote 词源字典]
1915, in telegraphs, where punctuation had to be spelled out and quote and unquote were used in place of the quotation marks; from un- (2) "reverse, opposite of" + quote (v.). Quote unquote together to indicate quotation of the word or phrase to follow (often with ironic intent) is from 1942.[unquote etymology, unquote origin, 英语词源]