Source : Webster's Revised Unabridged Dictionary (1913)

Ceremoniously \Cer`e*mo"ni*ous*ly\, adv.
   In a ceremonious way.

Source : WordNet®

ceremoniously
     adv : in a ceremonious manner; "my mother advised her children
           ceremoniouslly" [syn: {ceremonially}] [ant: {unceremoniously}]