I. To exasperate, irritate, provoke, make angry; to grieve, afflict: “ut recenti aliqua ira exacerbarentur animi,” Liv. 2, 35 fin.; 46; 6, 18; 8, 33; Suet. Tib. 62; 75; Plin. Ep. 8, 5, 2; Vulg. Psa. 9, 24 al.—
ex-ăcerbo , āvi, ātum, 1, v. a. (not anteAug.).