Timid and frail of action to the point of being highly irritating. Lacking in action. No back-bone. Passive. Submissive. Perceived as a "sweet" person. A term mostly applied to women (by other women) who will neither engage in straight conversation nor take action.
The character of Melanie (Hamilton) Wilkes in the old movie Gone With The Wind. As Scarlett would say, "That mealy mouth Melanie...."
by BBS June 29, 2006
by LudwigVan February 01, 2005
Guy A: Geez don't you hate it when you're getting off an elevator and people start walking in to get on before you get off, how rude.
Guy B: Oh, that doesn't bother me.
Guy C: what a fucking mealy mouth
Guy B: Oh, that doesn't bother me.
Guy C: what a fucking mealy mouth
by Matty Jo Jo September 29, 2006