buoyantly

from WordNet (r) 3.0 (2006)

buoyantly
    adv 1: in a cheerfully buoyant manner; "we accepted the
           opportunity buoyantly" [syn: {buoyantly}, {chirpily}]

from The Collaborative International Dictionary of English v.0.48

Buoyant \Buoy"ant\, a. [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.
      [1913 Webster]

   2. Bearing up, as a fluid; sustaining another body by being
      specifically heavier.
      [1913 Webster]

            The water under me was buoyant.       --Dryden.
      [1913 Webster]

   3. Light-hearted; vivacious; cheerful; as, a buoyant
      disposition; buoyant spirits. -- {Buoy"ant*ly}, adv.
      [1913 Webster]