Lewis Short
(verb) : dē-fervesco, fervi and ferbui (defervi, Ter. Ad. 1, 2, 72; Cic. Clu. 39, 108; id. Or. 30, 107; Cato R. R. 96, 1; Plin. Ep. 9, 16, 2 al.:
* Deferbui,Cic. Cael. 18, 43; 31, 77; Col. 12, 20, 2 et saep.), 3, (post-Aug.), to cease boiling, leave off raging.
* Lit.: ubi lupinus deferverit,Cato R. R. 96: aestus,Varr. R. R. 2, 2, 11: dum musteus fructus defervescat,Col. 9, 15 fin.; cf.: deferbuit mustum,id. 12, 38, 3; 12, 20, 2: ubi caelum enituit et deferbuit mare,Gell. 19, 1, 7.
* Trop.
* Of the fire of passion, to cease raging, to cool down, to be allayed, assuaged (a favorite expression of Cic.; elsewh. rare): ut ulciscendi vim differant in tempus aliud, dum defervescat ira: defervescere autem certe significat ardorem animi invita ratione excitatum,Cic. Tusc. 4, 36 fin.: sperabam jam defervisse adolescentiam,Ter. Ad. 1, 2, 72; cf.: cum adolescentiae cupiditates defervissent,Cic. Cael. 18, 43; id. Or. 30, 107: quasi deferverat oratio,id. Brut. 91 fin.: hominum studia defervisse,id. Clu. 39: dum defervescat haec gratulatio,id. Fam. 9, 2, 4; Plin. Ep. 9, 13, 4: regis indignatio deferbuerat,Vulg. Esth. 2, 1.
* (Fig. from the fermenting of wine.) To become clarified, clear: novi versiculi ut primum videbuntur defervisse,Plin. Ep. 9, 16 fin.
Charlton T. Lewis, Charles Short, A Latin Dictionary