Prompted by or characterised by revenge; severe, cruel.(adjective)
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Use "vengeable" in a sentence
"Arthur, and noble king that made me knight, wit you well I am right heavy for your sake, that ye thus sue upon me; and always I forbare you, for an I would have been vengeable, I might have met you in midst of the field, and there to have made your boldest knights full tame."
""So faute thei, to gret harm of this nacion," says one queer old chronicle; and another says: "It was more to be noted vengeable, for there the father was slain of the son and the son of the father.""
"To children it longith {e} nat to be [vengeable, [11]] 80"