Why, then, does she bother to lecture a blabbermouth like Jaimee Grubbs or any of Tiger's other mercenary mistresses?
Silence that blabbermouth; he does not know what he is talking about.
"I thought you'd managed to get that blabbermouth transposed to PolTerm," Zostha said.
Pelton muttered: "Why Frank sponsors that blabbermouth of a Mongery—"
A person who talks too much, esp one who reveals personal or secret matters indiscreetly; bigmouth •Blabmouth is found in the mid1920s: The blabbermouths are likely to have the whole wretched truth beat out of them (mid-1930s+)