verb (v)

• enter uninvited(verb.motion)

  Example:
  She irrupted into our sitting room.
  

  Synonym:
  intrude
  

  source: wordnet30
• erupt or intensify suddenly(verb.change)

  Example:
  The crowd irrupted into a burst of patriotism.
  

  Synonym:
  break open, burst out, erupt, flare, flare up
  

  source: wordnet30
• increase rapidly and in an uncontrolled manner(verb.change)

  Example:
  The island's rodent population irrupted.
  

  Synonym:
  explode
  

  source: wordnet30