Этимология
() American,OED origin unclear, perhaps onomatopoeic of blather; perhaps adaptation of dialectal speech, perhaps from yatata or yatter.“” in Merriam-Webster Online Dictionary, Merriam-Webster Online. Various variant forms appear in the US 1940s–60s; for example, the 1947 American musical Allegro by Oscar Hammerstein II|Oscar Hammerstein II]] and Richard Rodgers|Richard Rodgers]] contains a song called “Yatata, Yatata, Yatata,” about cocktail party chatter; see talk page for additional citations. Popularized in the United States in the late 1990s by TV show Seinfeld|Seinfeld]], where it appears as a catchphrase, initially in Season 8, Episode 19, entitled “The Yada Yada|The Yada Yada]]”, originally aired on April 24, 1997, which centers around the phrase (in the duplicative “yada yada” form)., This Day in Quotes, April 24, 2010 Sometimes popularly attributed to Yiddish, but this is dismissed by etymologists; see talk page for discussion.