enervate [e'nэ(r)ve`it] (verb) lessen the strength of; disturb the composure of
(人)の体力[気力]を弱める、無気力にさせる

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"Is this portrait like?" I asked bluntly.

"Like! Like whom? I did not observe it closely."

"You did, Mr. Rivers."

He almost started at my sudden and strange abruptness: he looked at me astonished. "Oh, that is nothing yet," I muttered within. "I don't mean to be baffled by a little stiffness on your part; I'm prepared to go to considerable lengths." I continued, "You observed it closely and distinctly; but I have no objection to your looking at it again," and I rose and placed it in his hand.

"A well-executed picture," he said; "very soft, clear colouring; very graceful and correct drawing."

"Yes, yes; I know all that. But what of the resemblance? Who is it like?"

Mastering some hesitation, he answered, "Miss Oliver, I presume."

"Of course. And now, sir, to reward you for the accurate guess, I will promise to paint you a careful and faithful duplicate of this very picture, provided you admit that the gift would be acceptable to you. I don't wish to throw away my time and trouble on an offering you would deem worthless."

He continued to gaze at the picture: the longer he looked, the firmer he held it, the more he seemed to covet it. "It is like!" he murmured; "the eye is well managed: the colour, light, expression, are perfect. It smiles!"

"Would it comfort, or would it wound you to have a similar painting? Tell me that. When you are at Madagascar, or at the Cape, or in India, would it be a consolation to have that memento in your possession? or would the sight of it bring recollections calculated to enervate and distress?"

He now furtively raised his eyes: he glanced at me, irresolute, disturbed: he again surveyed the picture.

"That I should like to have it is certain: whether it would be judicious or wise is another question."

(Jane Eyre --by Charlotte Bronte)