rĭgĭdus, a, um, adj. [rigeo], stiff, hard, inflexible, rigid (mostly poet. and in postAug. prose; cf. durus).
I Lit.: pruinae, Lucr. 2, 521; cf.: rigidum permanat frigus ad ossa, id. 1, 355: tellus, Verg. G. 2, 316: aqua, Ov. Tr. 3, 10, 48: umbrae, Lucr. 5, 764: frigus, id. 1, 356: cervicem rectam oportet esse non rigidam aut supinam, Quint. 11, 3, 82; cf. id. 11, 3, 160; so, cervix, Liv. 35, 11; Suet. Tib. 68; Ov. Tr. 1, 4, 14: artus morte, Lucr. 6, 1196: crura, Cic. N. D. 1, 36, 101: rostrum, Ov. M. 5, 673: cornu, id. ib. 9, 85: setae, id. ib. 8, 428: capilli, id. ib. 10, 425: oculi (with extenti), Quint. 11, 3, 76 et saep.: quercus, Verg. E. 6, 28; cf. columnae, Ov. F. 3, 529: malus, id. H. 5, 53.— In mal. part.: illud, Petr. 134, 11; cf. Mart. 6, 49, 2.— Hence: custos ruris, i. e. Priapus , Ov. F. 1, 391; Auct. Priap. 46; and absol. : rĭgĭda , f., Cat. 56, 7: silices, hard , Ov. M. 9, 613; 225: saxum, id. ib. 4, 517: mons, hard , rocky , id. ib. 8, 797: Niphates, Hor. C. 2, 9, 20: ferrum, Ov. R. Am. 19: serae, id. F. 1, 124: ensis, Verg. A. 12, 304; Ov. M. 3, 118: hasta, Verg. A. 10, 346: unguis, Ov. Am. 2, 6, 4 et saep.—
II Trop., stiff , hard , inflexible , rigid; hardy , stern , rough (syn.: tristis, severus): vox, hard , harsh , Quint. 11, 3, 32: Sabini, rough , rude , unpolished , Hor. Ep. 2, 1, 25; Ov. M. 14, 797: Getae, Hor. C. 3, 24, 11; Ov. Tr. 5, 1, 46: fossor, hardy , Mart. 7, 71, 4; cf. manus, Ov. M. 14, 647: virtutis verae custos rigidusque satelles, stern , inflexible , Hor. Ep. 1, 1, 17; so, censor, Ov. A. A. 2, 664: parens, id. M. 2, 813: senes, id. F. 4, 310: mens, id. H. 3, 96: vultus, id. ib. 4, 73: rigidi et tristes satellites, Tac. A. 16, 22: (Cato) rigidae innocentiae, Liv. 39, 40, 10; cf. of the younger Cato: rigidi servator honesti, Luc. 2, 389; so, mores, Ov. R. Am. 762: rigida duraque sententia Macri, Plin. Ep. 4, 9, 19; Sen. Ep. 11, 10; 21, 3; 81, 4: Mars, rough , fierce , Ov. M. 8, 20: leo, Mart. 10, 65, 13.— Comp. : quis non intellegit Canachi signa rigidiora esse quam ut imitentur veritatem? too stiff , hard , harsh , Cic. Brut. 18, 70: similis in statuariis differentia ... jam minus rigida Calamis fecit, Quint. 12, 10, 7.— Sup. : Abdera fatua et stoliditatis rigidissimae, Arn. 5, 164.—Hence, adv.: rĭgĭdē .
a Inflexibly; in a straight line , Vitr. 2, 3, 2; Sen. Ben. 2, 17, 4.—
b Rigorously , severely , Ov. Tr. 2, 251.— Comp. : disciplinam militarem rigidius adstringere, Val. Max. 9, 7 fin.