plăcĭdus, a, um, adj. [placeo, qs. pleasing, mild; hence], gentle, quiet, still, calm, mild, peaceful, placid (class.; syn.: quietus, mollis, lenis).
I In gen.
A Of persons: clemens, placidus, Ter. Ad. 864: reddere aliquem placidum, Plaut. Curc. 4, 3, 49; Ter. Ad. 534; Cic. Caecin. 10.—
B Of things: caelum, Sil. 12, 667: placidus et serenus dies, Plin. Ep. 5, 6, 14: mare, id. ib. 9, 26: pontus, Lucr. 5, 1004: amnis, Ov. M. 1, 702: placida quietaque constantia, Cic. Tusc. 4, 5, 10: placida ac lenis senectus, id. Sen. 5, 13: oratio, id. de Or. 2, 43, 183: vita, Lucr. 5, 1122: mors, Verg. A. 6, 522: somnus, Ov. F. 3, 185: urbs, Verg. A. 7, 46: nec quidquam magnum est nisi quod simul placidum, Sen. Ira, 1, 21, 4: re placidā atque otiosā, i. e. in quiet times , Plaut. Truc. 1, 1, 56.— Comp. : nihil illis placidius, aut quietius erat, Liv. 3, 14: loca placidiora, less visited with unfavorable weather , Pall. 1, 6.— Sup. : placidissima pax, Cic. Tusc. 5, 16, 48: tellus placidissima, Verg. A. 3, 78.—
II In partic.
A Of fruits, ripe , mellow : uva, Sedul. 1, 29.—
B Of plants, trees, etc., not wild , fruitful : arbores placidiores, Plin. 16, 5, 6, § 16.—Hence, adv.: plă-cĭdē , softly , gently , quietly , calmly , peacefully , placidly (class.): forem aperire, Plaut. Bacch. 4, 7, 35: placide volo, id. Merc. 1, 2, 47: propere hoc, non placide decet (sc. agi), id. Mil. 2, 2, 65: ire, gently , lightly , Ter. Phorm. 867: progredi, Caes. B. G. 6, 7: placide et sedate ferre dolorem, Cic. Tusc. 2, 24, 58: placide et sedate loqui, id. Or. 27, 92: placide et benigne verba facere, Sall. J. 102, 12: placide et comiter (inquit), Gell. 19, 1, 13.— Comp. : plebem in magistratu placidius tractare, Sall. C. 39, 2.— Sup. : placidissime respondit, Aug. Conf. 6, 1.