exhausting
 (a.)使耗盡的,使筋疲力盡的
 Ex·haust v. t. [imp. & p. p. Exhausted; p. pr. & vb. n. Exhausting.]
 1. To draw or let out wholly; to drain off completely; as, to exhaust the water of a well; the moisture of the earth is exhausted by evaporation.
 2. To empty by drawing or letting out the contents; as, to exhaust a well, or a treasury.
 3. To drain, metaphorically; to use or expend wholly, or till the supply comes to an end; to deprive wholly of strength; to use up; to weary or tire out; to wear out; as, to exhaust one's strength, patience, or resources.
    A decrepit, exhausted old man at fifty-five.   --Motley.
 4. To bring out or develop completely; to discuss thoroughly; as, to exhaust a subject.
 5. Chem. To subject to the action of various solvents in order to remove all soluble substances or extractives; as, to exhaust a drug successively with water, alcohol, and ether.
 Exhausted receiver. Physics See under Receiver.
 Syn: -- To spend; consume; tire out; weary.
 Ex·haust·ing, a. Producing exhaustion; as, exhausting labors. -- Ex*haust*ing, adv.
 ◄ ►
 exhausting
      adj 1: having a debilitating effect; "an exhausting job in the hot
             sun" [syn: draining]
      2: producing exhaustion; "an exhausting march"; "the visit was
         especially wearing" [syn: tiring, wearing, wearying]