a person whose speech is thick, slow, or halting.
a person whose speech is smoothly deceptive.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
How to use flannelmouth in a sentence
It will prove so helpful, according to one radio flannel-mouth, that it was likely an act of strategic planning.
That's what I want to tell you if you will shut up that red flannel mouth a minute.The Price of the Prairie | Margaret Hill McCarter