[f. as prec. + -ING2.] That exhausts; chiefly, that exhausts the strength; wearying, tiring, enfeebling.

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18[?].  Mason Good System Med. (L.). A series of exhausting paroxysms succeeds.

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1847.  Emerson, Repr. Men, Plato, Wks. (Bohn), I. 289. The misfortune … of coming after this exhausting generalizer.

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1855.  Macaulay, Hist. Eng., IV. 397. A mighty effort in truth it was, but too exhausting to be repeated.

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1858.  O. W. Holmes, Aut. Breakf.-t., i. 6. There are men of esprit who are excessively exhausting to some people.

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1860.  Tyndall, Glac., I. xi. 71. The exhausting journey over the boulders and débris had been too much for his London limbs.

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  Hence Exhaustingly adv., in an exhausting manner, so as to exhaust or tire out.

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1882.  Buxton, in 19th Cent., Nov., 791. The matter … was exhaustively (some might say exhaustingly) discussed.

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