Source : Webster's Revised Unabridged Dictionary (1913)

Usurious \U*su"ri*ous\ (?; 277), a. [From {Usury}.]
   1. Practicing usury; taking illegal or exorbitant interest
      for the use of money; as, a usurious person.

   2. Partaking of usury; containing or involving usury; as, a
      usurious contract. -- {U*su"ri*ous*ly}, adv. --
      {U*su"ri*ous*ness}, n.

Source : WordNet®

usuriously
     adv : to an exorbitant degree; "prices are exorbitantly high in
           the capital" [syn: {exorbitantly}, {extortionately}]