emulous (adj.)youdaoicibaDictYouDict[emulous 词源字典]
"desirous of equaling or excelling," late 14c., from Latin aemulus "striving, rivaling," in a bad sense "envious, jealous," from aemulari "to rival" (see emulation). Related: Emulously.[emulous etymology, emulous origin, 英语词源]