Lewis & Short

† crĭtĭcus, a, um, adj., = κριτικός, fit or suitable for deciding, capable of judging.

  1. I. Adj., only as a medic. t. t. (cf. crisimus), decisive, critical: accessio morbi, Aug. Conf. 6, 1 fin.
    More frequent,
  2. II. Subst.: crĭtĭ-cus, i, m., a critic, Cic. Fam. 9, 10, 1 (also ap. Suet. Gram. 14); Quint. 2, 1, 4; Hor. Ep. 2, 1, 51.