"kvetch" in the noun sense
1. kvetch
Yiddish) a constant complainer
2. kvetch
Yiddish) a nagging complaint
"kvetch" in the verb sense
1. complain, kick, plain, sound off, quetch, kvetch
express complaints, discontent, displeasure, or unhappiness
"My mother complains all day"
"She has a lot to kick about"
Source: WordNet® (An amazing lexical database of English)
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