adj. (colloquial).Difficult to deal with; wilful; obstinate. Also coarse in speech. [From the stable.]
1686. DURFEY, A Commonwealth of Women, i., 1. [Speaking of a girl.] I hate your young Wechees, Skitish Coltsthey are so HARD MOUTHD, theres no dealing with em.
1704. SWIFT, Tale of a Tub, Sect. ix. I myself, the author of these momentous truths, am a person, whose imaginations are HARD-MOUTHED, and exceedingly disposed to run away with his reason.
1704. SWIFT, On the Mechanical Operation of the Spirit, Sect. ii., par. 9. The flesh when it comes to the turn of being bearer, is wonderfully headstrong and HARD-MOUTHED.