[1] : The Collaborative International Dictionary of English v.0.48

exhaust \exhaust"\, v. t. imp.  p. p. exhausted; p. pr. 
   vb. n. exhausting. l. exhaustus, p. p. of exhaurire; ex
   out + haurire, haustum, to draw, esp. water; perhaps akin to
   icel. asua to sprinkle, pump.
   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.
      1913 webster

   2. to empty by drawing or letting out the contents; as, to
      exhaust a well, or a treasury.
      1913 webster

   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.
      1913 webster

            a decrepit, exhausted old man at fifty-five.
                                                  --motley.
      1913 webster

   4. to bring out or develop completely; to discuss thoroughly;
      as, to exhaust a subject.
      1913 webster

   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.
      1913 webster

   exhausted receiver. physics see under receiver.

   syn: to spend; consume; tire out; weary.
        1913 webster
see also:
exhausted exhausting exhausted receiver receiver 

[2] : The Collaborative International Dictionary of English v.0.48

exhausting \exhaust"ing\, a.
   producing exhaustion; as, exhausting labors. --
   exhaust"ing, adv.
   1913 webster
see also:
exhaust"ing 

[3] : WordNet (r) 2.0

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
see also:
draining tiring wearing wearying 

[4] : Moby Thesaurus II by Grady Ward, 1.0

37 moby thesaurus words for "exhausting":
   arduous, burdensome, crippling, debilitating, devitalizing,
   difficult, draining, enervating, enfeebling, fatiguesome,
   fatiguing, grinding, grueling, hard, harsh, heavy, killing,
   laborious, onerous, oppressive, overburdensome, punishing, sapping,
   straining, strenuous, stressful, tiresome, tiring, toilsome,
   trying, tyrannous, weakening, weariful, wearing, wearisome,
   wearying, weighty

Exhausting >> E Words
Exhausting, definition of term: Exhausting
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