from Wiktionary, Creative Commons Attribution/Share-Alike License
- And so on; and so forth.
- : blah blah blah.
American, origin unclear, perhaps onomatopoeic of blather; perhaps adaptation of dialectal speech, perhaps from yatata or yatter. Various variant forms appear in the US 1940s–60s; for example, the 1947 American musical Allegro by Oscar Hammerstein II and Richard Rodgers contains a song called “Yatata, Yatata, Yatata,” about cocktail party chatter; see talk page for additional citations. (Wiktionary)
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