Past tense of chatter; spoke rapidly or made quick successive sounds or movements.
From chatter (Middle English, likely from Old Norse/imitative origin meaning to make repeated clicking sounds) + -ed (past tense marker). The word originally described sounds, then extended to rapid speech.
The word chatter likely came from trying to imitate the sound itself—your tongue literally makes rapid 'tch-tch-tch' sounds when you chatter, so the word echoes its own meaning!
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