kvetch

• n. （美）吹毛求疵的人
• vi. （美）经常性地发牢骚；抱怨

来自依地语kvetch,来自中古高地德语quetschen,粉碎。引申词义抱怨，牢骚。

kvetch (v.)

"to complain, whine," 1953 (implied in kvetching), from Yiddish kvetshn, literally "squeeze, press," from German quetsche "crusher, presser." As a noun, from 1936 as a term of abuse for a person.