rĭgor (noun M) : rigeo
* Stiffness, inflexibility, rigidity, numbness, hardness, firmness, rigor (not freq. till after the Aug. per.; not in Cic.; cf. durities).
* Lit.: tandem bruma nives affert pigrumque rigorem,Lucr. 5, 746: cervicis,stiffness, rigidity,Plin. 28, 12, 52, § 192; 32, 8, 28, § 89; cf.: immobilis faciei,Quint. 9, 3, 101: vultus (in portraits),Plin. 35, 9, 35, § 58: nervorum,i. e. a cramp, spasm,Cels. 2, 1 and 7; so too simply rigor; and in plur., Plin. 26, 12, 81, § 130; 35, 6, 27, § 46.
* Esp.
* Transf., the stiffness produced by cold, for cold itself, chilliness, Lucr. 5, 640; 6, 368 (opp. calor); 307 (opp. ignis); cf. Alpinus,Ov. M. 14, 794: septentrionis,Tac. A. 2, 23: caeli et soli,Plin. 17, 24, 37, § 217: recentissimus aquae,Col. 9, 14, 7: torpentibus rigore nervis,Liv. 21, 58 fin. et saep.
* Trop., hardness, inflexibility, stiffness, roughness, severity, rigor (cf.: severitas, asperitas, morositas): accentus rigore quodam minus suaves habemus,Quint. 12, 10, 33 (cf. rigidus, II. init.): te tuus iste rigor, positique sine arte capilli ... decet,rudeness,Ov. H. 4, 77: nocuit antiquus rigor et nimia severitas,Tac. H. 1, 18 fin.: animi,id. A. 6, 50; cf. Plin. 7, 19, 18, § 79; Sen. Ira, 1, 16, 13 (opp. constantia): disciplinae veteris,Tac. H. 1, 83: juris,Dig. 49, 1, 19.