Meaning 1 · most common
start suddenly
To begin quickly and unexpectedly, especially something bad like a fire, war, or disease.
Examples
A fire broke out in the kitchen while we were having dinner.
A: Did you hear about the protest downtown?
B: Yeah, apparently a fight broke out and the police had to step in.
Common mistake
Not: A fire broke out of the kitchen.
Say: A fire broke out in the kitchen.
'Break out' = suddenly start (use 'in'); 'break out OF' means escape.
More on “start suddenly”Another example · Tell it apart · Goes with · Tip
Another example
If a disease breaks out in a city, the government needs to act quickly to control it.
Tell it apart
Fighting broke out in the streets.
The prisoners broke out of jail.
Goes with
- break out (fire/war/disease)