Past tense of grouch; complained in a bad-tempered or grumbling way.
From grouch (1900s slang), likely from Yiddish 'grushe' or 'grutshe' (displeasure), influenced by grouse (to complain). The -ed suffix marks past tense.
Grouch came to English from Yiddish through American slang—it's a word that traveled from Eastern European Jewish communities into cartoon characters like Oscar the Grouch!
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