ad-verbĭum, ii, n. [verbum], in gram.,
an adverb , ἐπίρρημα; acc. to Priscian's expl.: pars orationis indeclinabilis, cujus significatio verbis adicitur , p. 1003 P.; Quint. 1, 5, 48; 50; 9, 3, 53; 11, 3, 87 al.