fervid (adj.)youdaoicibaDictYouDict[fervid 词源字典]
1590s, "burning, glowing, hot," from Latin fervidus "glowing, burning; vehement, fervid," from fervere "to boil, glow" (see brew (v.)). Figurative sense of "impassioned" is from 1650s. Related: Fervidly; fervidness.[fervid etymology, fervid origin, 英语词源]