flannelmouthed

[flan-l-mouth d, -moutht]

adjective

talking thickly, slowly, or haltingly.
characterized by deceptive or shifty speech.

Origin of flannelmouthed

An Americanism dating back to 1880–85; flannel + mouth + -ed3
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019