ūsŭālis — Lewis & Short
ūsŭālis, e, adj.2. usus.
I That is for use, fit for use (post-class.):
mancipia,Dig. 39, 4, 16, § 3.—*
II Usual, common, ordinary:
sermo,Sid. Ep. 4, 10; Ambros. in Luc. 7, n. 150.—Hence, adv.: ūsŭālĭter, in the usual manner (late Lat.), Cassiod. Var. 2, 39.