Light·some a.
  1. Having light; lighted; not dark or gloomy; bright.
     White walls make rooms more lightsome than black.   --Bacon.
  2. Gay; airy; cheering; exhilarating.
     That lightsome affection of joy.   --Hooker.
  -- Light*some*ly, adv. -- Light*some*ness, n.
     Happiness may walk soberly in dark attire, as well as dance lightsomely in a gala dress.   --Hawthorne.
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  lightsomely
       adv 1: moving with quick light steps; "she walked lightsomely down
              the long staircase" [syn: trippingly]
       2: in a light-hearted manner; "he light-heartedly overlooks
          some of the basic facts of life" [syn: light-heartedly]