Simple past tense and past participle of gabble.(verb)
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Use "gabbled" in a sentence
"Tom Byam Shaw's Ariel may swing on a trapeze from time to time but his speech – at first strangely elongated, then gabbled – is earthbound and he trips around the stage as if he were an obliging ballet student rather than a sharp-edged sprite."
"As they caught sight of Ah Cho they gabbled among themselves in low voices."
"A district nurse came, gabbled into her mobile phone inches away from Dan's ear, a doctor, another nurse."