Lewis Short
(adjective) : ē-nervis, e, nervus
* Nerveless, enervated, weak, effeminate (rare and postAug., for enervatus; cf. enervo): corpus, Petr. poët. 119, 25: homo,Sen. Thyest. 176: compositio (with effeminata),Quint. 9, 4, 142; cf. orator (with solutus),Tac. Or. 18 fin.: et fluxum spectaculum,Plin. Pan. 33, 1; Val. Max. 6, 4, 2; 8, 8 init. al.—Adv.: enervĭter, weakly: blandus, August. cont. Faust. 22, 50.
Charlton T. Lewis, Charles Short, A Latin Dictionary