outbreak Meaning, Definition & Usage

  1. noun a sudden violent spontaneous occurrence (usually of some undesirable condition)
    eruption; irruption.
    • the outbreak of hostilities

WordNet

Out"break` noun
Definitions
  1. A bursting forth; eruption; insurrection. "Mobs and outbreaks." J. H. Newman.
    The flash and outbreak of a fiery mind. Shak.

Webster 1913