WordNet (r) 3.0 (2006):

liquid assets
    n 1: assets in the form of cash (or easily convertible into
         cash) [syn: liquid assets, current assets, quick
         assets]

Moby Thesaurus II by Grady Ward, 1.0:

43 Moby Thesaurus words for "liquid assets":
   assessed valuation, assets, assets and liabilities,
   available funds, available means, balance, balance in hand,
   capital, capital goods, capitalization, cash, cash in hand,
   cash supply, circumstances, current assets, deferred assets,
   fixed assets, frozen assets, fund, funds, grist, holdings,
   immediate resources, intangible assets, intangibles,
   material assets, means, money in hand, net assets, net worth,
   property, quick assets, ready money, resource, resources, stock,
   stock-in-trade, supply, tangible assets, tangibles, the ready,
   treasury, wealth