1. 
[syn: exorbitant, extortionate, outrageous, steep, unconscionable, usurious]
The Collaborative International Dictionary of English v.0.48:
Usurious \U*su"ri*ous\ (?; 277), a. [From Usury.]
   [1913 Webster]
   1. Practicing usury; taking illegal or exorbitant interest
      for the use of money; as, a usurious person.
      [1913 Webster]
   2. Partaking of usury; containing or involving usury; as, a
      usurious contract.
      [1913 Webster] -- U*su"ri*ous*ly, adv. --
      U*su"ri*ous*ness, n.
      [1913 Webster]
WordNet (r) 3.0 (2006):
usurious
    adj 1: greatly exceeding bounds of reason or moderation;
           "exorbitant rent"; "extortionate prices"; "spends an
           outrageous amount on entertainment"; "usurious interest
           rate"; "unconscionable spending" [syn: exorbitant,
           extortionate, outrageous, steep, unconscionable,
           usurious]
Moby Thesaurus II by Grady Ward, 1.0:
24 Moby Thesaurus words for "usurious":
   cutthroat, exacting, excessive, exorbitant, extortionate,
   extravagant, fancy, gouging, grossly overpriced, immoderate,
   inflationary, inordinate, out of bounds, out of sight, outrageous,
   overpriced, preposterous, prohibitive, skyrocketing, spiraling,
   unconscionable, undue, unreasonable, unwarranted