Lat. 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 be made ab irato. A suit to set aside such a will is called an action abirato. Merlin, Repert. Ab irato. Snell v. Weldon, 239 Ill. 279, 87 N.E. 1022.