gayly

from WordNet (r) 3.0 (2006)

gayly
    adv 1: in a joyous manner; "they shouted happily" [syn:
           {happily}, {merrily}, {mirthfully}, {gayly}, {blithely},
           {jubilantly}] [ant: {unhappily}]

from The Collaborative International Dictionary of English v.0.48

Gayly \Gay"ly\, adv. [Also spelled {gaily}.]
   1. With mirth and frolic; merrily; blithely; gleefully.
      [1913 Webster]

   2. Finely; splendidly; showily; as, ladies gayly dressed; a
      flower gayly blooming. --Pope.
      [1913 Webster]