Black's Law Dictionary (2nd edition)dictionaries

Ab Irato

By one who is angry. A devise or gift made by a man adversely to the interest of his heirs, on account of anger or hatred against them, is said to he made ab iraio. A suit to set aside such a will is called an action ab irato. Meri. Repert “Ab irato

Source: Black's Law Dictionary 2nd Ed (1910)