queasy (adj.)youdaoicibaDictYouDict[queasy 词源字典]
mid-15c., kyse, coysy, of uncertain origin, possibly from a Scandinavian source, such as Old Norse kveisa "boil," perhaps influenced by Anglo-French queisier, from Old French coisier "to wound, hurt, make uneasy," which seems to be from the same Germanic root as kveisa. But the history is obscure and evidences of development are wanting. Related: Queasily; queasiness.[queasy etymology, queasy origin, 英语词源]