adjective satellite (s)

• weak and likely to lose consciousness(adj.all)

  Example:
  Light-headed with wine.
  Light-headed from lack of sleep.
  

  Synonym:
  faint, light, lightheaded, swooning
  

  source: wordnet30
• lacking seriousness; given to frivolity(adj.all)

  Example:
  Light-headed teenagers.
  

  Synonym:
  airheaded, dizzy, empty-headed, featherbrained, giddy, lightheaded, silly
  

  source: wordnet30