BUOYANTLY
buoyantly, chirpily
(adverb) in a cheerfully buoyant manner; “we accepted the opportunity buoyantly”
Source: WordNet® 3.1
Etymology
Adverb
buoyantly (comparative more buoyantly, superlative most buoyantly)
In a buoyant manner.
Source: Wiktionary
BUOYANT
Buoy"ant, a. Etym: [From Buoy, v. t. & i.]
1. Having the quality of rising or floating in a fluid; tending to
rise or float; as, iron is buoyant in mercury. "Buoyant on the
flood." Pope.
2. Bearing up, as a fluid; sustaining another body by being
specifically heavier.
The water under me was buoyant. Dryden.
3. Light-hearted; vivacious; cheerful; as, a buoyant disposition;
buoyant spirits.
– Buoy"ant*ly, adv.
Source: Webster’s Unabridged Dictionary 1913 Edition