An example of an outbreak is five cases of whooping cough increasing to fifty cases overnight.
- a breaking out; sudden occurrence, as of disease or war
- an insurrection or riot
- A sudden increase: an outbreak of influenza.
- A sudden eruption; an outburst: “an outbreak of strikes, violent agitation, and arrests” (Samuel Chew).
- An eruption, sudden appearance
- Any epidemic outbreak causes understandable panic
- A sudden increase.
- There has been an outbreak of vandalism at the school.
- An outburst or sudden eruption, especially of violence and mischief.
- There has been an outbreak of broken windows in the street.
- An uproar, riot
- Poorly trained officers can't control a prison outburst without excessive repression
- (uncountable) A geological layer that breaks out
(third-person singular simple present outbreaks, present participle outbreaking, simple past outbroke, past participle outbroken)
- (intransitive) To burst out
- (intransitive) To break forth