light·some /ˈlaɪtsəm/
  (a.)暢快的,快活的,輕盈的
  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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  lightsome
       adj 1: moving easily and quickly; nimble; "the dancer was light and
              graceful"; "a lightsome buoyant step"; "walked with a
              light tripping step" [syn: light, tripping]
       2: carefree and happy and lighthearted; "was loved for her
          blithe spirit"; "a merry blithesome nature"; "her
          lighthearted nature"; "trilling songs with a lightsome
          heart" [syn: blithe, blithesome, lighthearted]