An eruption; the sudden appearance of a rash, disease, etc. / A sudden increase. / (figuratively) An outburst or sudden eruption, especially of violence and mischief.

(intransitive) To burst out or break forth.

plural of outbreak

Third-person singular simple present indicative form of outbreak

plural of outbreaking

The act of breaking out. / That which bursts forth.

present participle of outbreak

plural of outbreaker

One who breaks out; an escapee from prison.

(meteorology) A very large tornado outbreak