kibitzer

Etymology

Borrowed from Yiddish [Term?], from Hebrew קיבוץ‎ (kibúts, “a gathering”). Alternatively, from colloquial German kiebitzen (“to be an onlooker at a game”).

Noun

kibitzer (plural kibitzers)

1. A person who offers unsolicited views, advice, or criticism; one who kibitzes.

   Did I ask you what you thought about my card hand, you kibitzer!

   • 1971, John Updike, New York Times review on 'Rabbit Redux', 05/11/71, ,

     Neither good nor evil exactly, he is the ultimate catalyst or kibitzer, a blue-note howl of pain and laughter such as Charlie Parker might have blown.