GAYLY
happily, merrily, mirthfully, gayly, blithely, jubilantly
(adverb) in a joyous manner; “they shouted happily”
Source: WordNet® 3.1
Etymology
Adverb
gayly (comparative more gayly, superlative most gayly)
(uncommon, dated) Cheerfully; in a gay manner.
Usage notes
• The meaning "in a homosexual manner", while an obvious derivation of the current primary meaning of gay, rarely appears, and when it does, it is typically used with an awareness of its rarity. In reference to cheerfulness or joyfulness, gaily is much more common.
Homophones
• Gaely, Gæly (neogaelic feminine name)
Source: Wiktionary
Gay"ly, adv.
1. With mirth and frolic; merrily; blithely; gleefully.
2. Finely; splendidly; showily; as, ladies gayly dressed; a flower
gayly blooming. Pope.
Source: Webster’s Unabridged Dictionary 1913 Edition