The Collaborative International Dictionary of English v.0.48:

Opulent \Op"u*lent\, a. [L. opulens, opulentus, fr. ops, opis,
   power, wealth, riches, perh. akin to E. apt: cf. F. opulent.
   Cf. Copious, Couple, Office.]
   Having a large estate or property; wealthy; rich; affluent;
   as, an opulent city; an opulent citizen. -- Op"u*lent*ly,
   adv.
   [1913 Webster]

         I will piece
         Her opulent throne with kingdoms.        --Shak.
   [1913 Webster]

WordNet (r) 3.0 (2006):

opulent
    adj 1: rich and superior in quality; "a princely sum"; "gilded
           dining rooms" [syn: deluxe, gilded, grand,
           luxurious, opulent, princely, sumptuous]