The Collaborative International Dictionary of English v.0.48:
Lavishly \Lav"ish*ly\, adv. In a lavish manner. [1913 Webster]WordNet (r) 3.0 (2006):
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, lavishly] 2: in a rich and lavish manner; "lavishly decorated" [syn: lavishly, richly, extravagantly]