Simple past tense and past participle of natter.(verb)
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Use "nattered" in a sentence
"My cousin nattered through my cottage door, How will I placate the Doge?"
"As she said of herself, she believed she grew more "nattered" as she grew older; but that she was conscious of her "natteredness" was"
"So we publicly nattered and yammered at each other for a while, both of us enjoying it immensely, I suspect, and had the occasional b/c chat about more personal matters."