noun (n)

• a feeling facetious merriment(noun.feeling)

  Synonym:
  jocundity
  

  source: wordnet30
• fun characterized by humor(noun.communication)

  Synonym:
  jocosity
  

  source: wordnet30
• activity characterized by good humor(noun.act)

  Synonym:
  jest, joke
  

  source: wordnet30
• Jesting; merriment.(noun)

  source: webster1913