youff noun 1verb 1forms 3 noun1 •(Scotland, no longer used) The bark of a dog.This was blithe news; for really we were wearied with going about, and hearing yon Sicilians chatter in a tongue that was as unmeaning as a dog's youff. — 1833 verb1 •(Scotland, no longer used) To bark formsyouffed · youffing · youffs