verb (v)

• come to pass(verb.change)

  Example:
  What is happening?.
  

  Synonym:
  come about, fall out, go on, hap, occur, pass, pass off, take place
  

  source: wordnet30
• happen, occur, or be the case in the course of events or by chance(verb.change)

  Example:
  It happens that today is my birthday.
  

  Synonym:
  bechance, befall
  

  source: wordnet30
• chance to be or do something, without intention or causation(verb.social)

  Example:
  I happen to have just what you need!.
  

  source: wordnet30
• come into being; become reality(verb.change)

  Synonym:
  materialise, materialize
  Antonym:
  dematerialise, dematerialize
  

  source: wordnet30
• come upon, as if by accident; meet with(verb.possession)

  Example:
  I happened upon the most wonderful bakery not very far from here.
  

  Synonym:
  bump, chance, encounter, find
  

  source: wordnet30
• To come by chance; to come without previous expectation; to fall out.(verb)

  source: webster1913