It was only whispered, for something unutterably mournful no less than distressing in this spectacle of a man showing himself to be so entirely the vane of a passion enervated the feminine instinct for punctilios.
There are no more uses of "enervate" in the book.
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The late nights and drugs were so enervating, she couldn’t hold on to her job.
Other nights she could sleep for eighteen drugged hours and wake, enervated, hardly able to stand.