adverbium
From LSJ
εἰ μὴ ἦλθον καὶ ἐλάλησα αὐτοῖς, ἁμαρτίαν οὐκ εἶχον → if I had not come and spoken to them, they would not be guilty of sin
Latin > English (Lewis & Short)
ad-verbĭum: ii, n. verbum, in gram.,
I 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.