/ ˈenəveɪt; NAmE ˈenərv-/ verb
[ vn ] ( formal ) to make sb feel weak and tired :
an enervating disease / climate
► en·er·va·tion / ˌenəˈveɪʃn; NAmE ˌenərˈv-/ noun [ U ]
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WORD ORIGIN
early 17th cent.: from Latin enervat- weakened (by extraction of the sinews), from the verb enervare , from e- (variant of ex- ) out of + nervus sinew.