I. Act., to disuse, to lay aside a custom or habit, to disaccustom, to put out of use: desuevi, ne quo ad cenam iret, Titin. ap. Non. 95, 1: “arma diu desueta,” Verg. A. 2, 509; cf.: “rem desuetam usurpare,” Liv. 3, 38: “desueta sidera cerno (i. e. quae cernere desuevi),” Ov. M. 5, 503; cf.: “voces jam mihi desuetae,” id. ib. 7, 646: “desueta verba,” id. Tr. 5, 7, 63: “in desuescendis morari,” Quint. 3, 8, 70.—With inf.: “desueto Samnite clamorem Romani exercitus pati,” Liv. 8, 38, 10.—
II. Neutr., to become unaccustomed, to disaccustom one's self; or in the perf., to be unaccustomed: “paullatim antiquo patrum honori,” Sil. 3, 576: “jam desueta triumphis (i. e. bellis) agmina,” Verg. A. 6, 815; cf. id. ib. 7, 693: “fera rabiem desueta,” Stat. Th. 5, 231: “desueta corda,” Verg. A. 1, 722.