bitter (adj.)youdaoicibaDictYouDict[bitter 词源字典]
Old English biter "bitter, sharp, cutting; angry, embittered; cruel," from Proto-Germanic *bitras- (cognates: Old Saxon bittar, Old Norse bitr, Dutch bitter, Old High German bittar, German bitter, Gothic baitrs "bitter"), from PIE root *bheid- "to split" (cognates: Old English bitan "to bite;" see bite (v.)). Evidently the meaning drifted in prehistoric times from "biting, of pungent taste," to "acrid-tasting." Used figuratively in Old English of states of mind and words. Related: Bitterly.[bitter etymology, bitter origin, 英语词源]
kike (n.)youdaoicibaDictYouDict
derogatory slang for "a Jew," by 1901, American English; early evidence supports the belief that it was used at first among German-American Jews in reference to newcomers from Eastern Europe, perhaps because the names of the latter ended in -ki or -ky.
There is no charity organization of any kind here [a small city in Pennsylvania] and, what is sadder to relate, the Jews in this city will not form one; that is, if the present temper of the people can be used as a criterion. The German Jews are bitterly opposed to the "Kikes," as they persist in calling the Russian Jews .... ["Report of the National Conference of Jewish Charities in the United States," Cleveland, 1912]
Philip Cowen, first editor of "The American Hebrew," suggests a source in Yiddish kikel "circle." According to him, Jewish immigrants, ignorant of writing with the Latin alphabet, signed their entry forms with a circle, eschewing the "X" as a sign of Christianity. On this theory, Ellis Island immigration inspectors began calling such people kikels, and the term shortened as it passed into general use.
mortally (adv.)youdaoicibaDictYouDict
late 14c., "to the death; resulting in death," also "bitterly, intensely," from mortal (adj.) + -ly (2).
sarcasm (n.)youdaoicibaDictYouDict
1570s, sarcasmus, from Late Latin sarcasmus, from late Greek sarkasmos "a sneer, jest, taunt, mockery," from sarkazein "to speak bitterly, sneer," literally "to strip off the flesh," from sarx (genitive sarkos) "flesh," properly "piece of meat," from PIE root *twerk- "to cut" (cognates: Avestan thwares "to cut"). Current form of the English word is from 1610s. For nuances of usage, see humor.
sorely (adv.)youdaoicibaDictYouDict
Old English sarlice "grievously, mournfully, bitterly, painfully;" see sore (adj.) + -ly (2).