Simple past tense and past participle of drivel.(verb)
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Use "drivelled" in a sentence
"'Give me a shilling!' was her reply, while the slaver drivelled unrestrained from her mouth, rendering utterly disgusting a chin that a statuary might have wished to model."
"_Now just hold hard here, busters, now goddamn it enough is ENO UGH, whaddya wheredya get the idea you can_ and so forth, in the grip of his waking nightmare he drivelled on and on until one of the four, obviously it was the woman, came up, swung her rifle butt and broke his flapping jaw."
"The imbecile drivelled, about an imaginary toff, who had once given him two hundred and fifty-seven golden sovereigns."