ἀλλὰ ῥῦσαι ἡμᾶς ἀπὸ τοῦ πονηροῦ → but deliver us from evil
pĕr-ăcerbus: a, um, adj.,I very harsh to the taste.I Lit.: uva peracerba gustatu, Cic. Sen. 15, 53.—II Trop., very painful: mihi peracerbum fuit, quod, etc., Plin. Ep. 6, 5, 6.
pĕrăcerbus,¹⁵ a, um, très aigre : Cic. CM 53