The Collaborative International Dictionary of English v.0.48:

Prurient \Pru"ri*ent\, a. [L. pruries, -entis, p. pr. of prurire
   to itch. Cf. Freeze.]
   Uneasy with desire; itching; especially, having a lascivious
   curiosity or propensity; lustful. -- Pru"ri*ent*ly, adv.
   [1913 Webster]

         The eye of the vain and prurient is darting from object
         to object of illicit attraction.         --I. Taylor.
   [1913 Webster]

WordNet (r) 3.0 (2006):

pruriently
    adv 1: in a prurient manner