The Collaborative International Dictionary of English v.0.48:

Wealth \Wealth\, n. [OE. welthe, from wele; cf. D. weelde
   luxury. See Weal prosperity.]
   [1913 Webster]
   1. Weal; welfare; prosperity; good. [Obs.] "Let no man seek
      his own, but every man another's wealth." --1 Cor. x. 24.
      [1913 Webster]

   2. Large possessions; a comparative abundance of things which
      are objects of human desire; esp., abundance of worldly
      estate; affluence; opulence; riches.
      [1913 Webster]

            I have little wealth to lose.         --Shak.
      [1913 Webster]

            Each day new wealth, without their care, provides.
                                                  --Dryden.
      [1913 Webster]

            Wealth comprises all articles of value and nothing
            else.                                 --F. A.
                                                  Walker.
      [1913 Webster]

   3. (Econ.)
      (a) In the private sense, all property which has a money
          value.
      (b) In the public sense, all objects, esp. material
          objects, which have economic utility.
      (c) Those energies, faculties, and habits directly
          contributing to make people industrially efficient; in
          this sense, specifically called personal wealth.
          [Webster 1913 Suppl.]

   Active wealth. See under Active.
      [1913 Webster]

   Syn: Riches; affluence; opulence; abundance.
        [1913 Webster]

WordNet (r) 3.0 (2006):

wealth
    n 1: the state of being rich and affluent; having a plentiful
         supply of material goods and money; "great wealth is not a
         sign of great intelligence" [syn: wealth, wealthiness]
         [ant: impoverishment, poorness, poverty]
    2: the quality of profuse abundance; "she has a wealth of
       talent"
    3: an abundance of material possessions and resources [syn:
       wealth, riches]
    4: property that has economic utility: a monetary value or an
       exchange value

Moby Thesaurus II by Grady Ward, 1.0:

165 Moby Thesaurus words for "wealth":
   Easy Street, abundance, affluence, ample sufficiency, ampleness,
   amplitude, assessed valuation, assets, assets and liabilities,
   avalanche, bed of roses, bonanza, bountifulness, bountiousness,
   bumper crop, capital, capital gains, circumstances, cleanup,
   clear profit, clover, comfort, copiousness, current assets,
   deferred assets, dividends, earnings, ease, easy circumstances,
   estate, extravagance, exuberance, felicity, fertility,
   filthy lucre, fixed assets, fleshpots, flood, flow, foison,
   fortune, frozen assets, full measure, fullness, funds, gain, gains,
   generosity, generousness, get, gettings, gleanings, goods,
   gracious life, gracious living, great abundance, great plenty,
   gross, gross profit, gush, happiness, hoard, holdings, income,
   intangible assets, intangibles, interest, killing, landslide,
   lap of luxury, lavishness, liberality, liberalness, life of ease,
   liquid assets, loaves and fishes, lots, lucre, luxuriance, luxury,
   makings, material assets, maximum, mean, means, more than enough,
   much, myriad, myriads, neat profit, net, net assets, net profit,
   net worth, numerousness, opulence, opulency, outpouring, overflow,
   paper profits, pelf, percentage, perk, perks, perquisite, pickings,
   plenitude, plenteousness, plentifulness, plenty, possessions,
   prevalence, proceeds, prodigality, productiveness, profit, profits,
   profuseness, profusion, property, prosperity, prosperousness,
   quantities, quick assets, rake-off, receipts, repleteness,
   repletion, resources, return, returns, rich harvest, rich vein,
   riches, richness, riot, riotousness, scads, security, shower,
   spate, stock, stock-in-trade, store, stream, substance,
   substantiality, substantialness, success, superabundance, take,
   take-in, tangible assets, tangibles, teemingness,
   the affluent life, the good life, thriving condition,
   upward mobility, velvet, weal, welfare, well-being, winnings,
   worth