acerbic (adj.)youdaoicibaDictYouDict[acerbic 词源字典]
1865, originally, and usually, figurative: "sour, harsh, severe" (of speech, manners, etc.), from Latin acerbus "harsh to the taste, sharp, bitter, sour" (see acerbity) + -ic.[acerbic etymology, acerbic origin, 英语词源]