Published online by Cambridge University Press: 22 April 2026
1 Other dialectal forms and derivatives may be found in the etymological dictionaries.
2 Also Port. (archaic) tibo; but Mod. Port. tépido is learned.
3 In Gröber's Grundriss d. rom. Phil. I2 (1904-6); a rather similar view is given by E. H. Tuttle, Mod. Phil. 11. 348 (Jan. 1914).
4 References for this and other views are given in W. Meyer-Lubke, Rom. etym. Worth., s.v. frigidus.
5 In the Hispanic peninsula rigidus left few continuants, apart from learned words. Port. rijo ‘harsh, rigid’, is regular; it has an abstract derivative, rijeza. Sp. recio ‘strong, vigorous, hard, heavy’ is irregular both in its e and in its c, and has been taken as a back-formation from arrecir-se ‘to become stiff and swollen from cold’, which developed regularly from ad + rigescere; cf. Meyer-Lübke, LEW3, No. 7312a (who cites Galician arrecerse and not Castilian arrecirse).