Source : Webster's Revised Unabridged Dictionary (1913)

Lavishly \Lav"ish*ly\, adv.
   In a lavish manner.

Source : WordNet®

lavishly
     adv 1: in a wasteful manner; "the United States, up to the 1920s,
            used fuel lavishly, mainly because it was so cheap"
            [syn: {extravagantly}]
     2: in a rich and lavish manner; "lavishly decorated" [syn: {richly},
         {extravagantly}]