The Collaborative International Dictionary of English v.0.48:
Ceremoniously \Cer`e*mo"ni*ous*ly\, adv. In a ceremonious way. [1913 Webster]WordNet (r) 3.0 (2006):
ceremoniously adv 1: in a ceremonious manner; "my mother advised her children ceremoniously" [syn: ceremoniously, ceremonially] [ant: unceremoniously]