Babblemouth

It’s a slow-dazzle performance that leaves you wishing the film would pair him up with Adams (a brief dalliance between them is inexplicably dropped) instead of sending his dancer wife, a neurotic babblemouth, back home to him.

Source: wiktionary

He was a middle-aged babblemouth who talked computers and fad diets remorselessly, seasoning his monologues with plod monosyllables—Jung, Bach, Proust—managing to give them the intellectual weight of Ping-Pong balls.

Source: wiktionary

I WAS WONDERING WHEN YOU WOULD PAUSE FOR BREATH… …SO I MIGHT TRY TO GET A WORD IN EDGEWISE. / I GUESS SOMETIMES I DO TURN INTO A BABBLEMOUTH--SORRY.

Source: wiktionary

A babblemouth if I ever saw one. He beamed, fat and florid, through these thick hornrimmed specs. ‘You’re Lovejoy. Am I right or am I right?’ I was to learn he only gave the world the two choices. I said nothing, already knowing who I was.

Source: wiktionary