barbarismus, i, m., = βαρβαρισμός, an impropriety of speech, barbarism; esp. of pronunciation (acc. to Gell. 13, 6, 14; cf. id. 5, 20, 1, not in use before the Aug. per.; in Nigidius, instead of it, rusticus sermo), Quint. 1, 5, 5 sq.; Auct. Her. 4, 12, 17; Gell. l. l.; 5, 20, 4; Don. p. 1767 sq. P.; Charis. p. 237 sq.; id. Diom. p. 446 sq. P. al.; cf. the foll.