The Collaborative International Dictionary of English v.0.48:

Enviable \En"vi*a*ble\, a. [From Envy.]
   Fitted to excite envy; capable of awakening an ardent desire
   to posses or to resemble.
   [1913 Webster]

         One of most enviable of human beings.    --Macaulay.
   -- En"vi*a*ble*ness, n. -- En"vi*a*bly, adv.
   [1913 Webster]

WordNet (r) 3.0 (2006):

enviably
    adv 1: in an enviable manner; "she was enviably fluent in
           French"