Wordnet 3.0
ADVERB (1)
1. 
 in a majestic manner; 
- Example: "flamingoes walk majestically through the marshes"
The Collaborative International Dictionary of English v.0.48:
Majestical \Ma*jes"tic*al\, a.
   Majestic. --Cowley.
   [1913 Webster]
         An older architecture, greater, cunninger, more
         majestical.                              --M. Arnold.
   [1913 Webster] -- Ma*jes"tic*al*ly, adv. --
   Ma*jes"tic*al*ness, n.
   [1913 Webster]
WordNet (r) 3.0 (2006):
majestically
    adv 1: in a majestic manner; "flamingoes walk majestically
           through the marshes"