I.cheerfulness, gayety, good-humor, joyousness, merriment, hilarity (class.): “hilaritatem illam, qua hanc tristitiam temporum condiebamus, in perpetuum amisi,” Cic. Att. 12, 40, 3; cf.: “tristitia deductis, hilaritas remissis (superciliis) ostenditur,” Quint. 11, 3, 79: “hilaritate et lascivia,” Cic. Fin. 2, 20, 65: “itaque hilaritatis plenum judicium ac laetitiae fuit,” id. de Or. 1, 57, 243: “hilaritas illa nostra et suavitas,” id. Fam. 9, 11, 1: “erat in M. Druso adulescente singularis severitas, in C. Laelio multa hilaritas,” id. Off. 1, 30, 108: “in praecordiis praecipua hilaritatis sedes,” Plin. 11, 37, 77, § 198: “ut hilaritate enitescant (oculi),” Quint. 11, 3, 75: “ceterae hilaritates non implent pectus,” Sen. Ep. 23, 3: “cum diei permittit hilaritas,” fineness, pleasantness, Col. 9, 14, 18: arboris, i. e. a fresh or lively appearance, Plin. 17, 16, 26, § 118.
hĭlărĭtas , ātis, f. hilaris,