ˈtärn ə l, ˈtȧn- adverb (or adjective)
Etymology: alteration of eternal
dialect : damned — used as a mild imprecation
paid a tarnal high price for it — C.G.Loomis
fire is a cruel, tarnal thing — Conrad Richter
• tar·nal·ly - ə lē, - ə li adverb , dialect