break out

You use it as a phrasal verb. Usually, the subject is the bad thing itself. You say, 'A fire broke out in the kitchen.' You do not need an object after it. It just happens. It feels sudden and often unexpected. If you are talking about a skin problem, it means spots appeared overnight. We have all been there before a big date!

Use it when reporting news or describing a sudden event. It is perfect for talking about history, like when a war broke out. Use it at the doctor's office to describe a skin reaction. Use it in a movie review when a prison escape happens. It is a very visual and active phrase. It makes your storytelling feel more dramatic and immediate.

Do not use it for good things. You would not say 'A celebration broke out' unless it was a very wild and messy one. Do not use it for scheduled events. A meeting does not break out; it just starts. Also, do not confuse it with break up. One is about starting, the other is about ending a relationship. That would be an awkward mistake to make at a wedding!

This phrase has roots in the idea of escaping confinement. In English-speaking cultures, we use it to emphasize that we have lost control of a situation. It became very common in news reporting during the 20th century. It reflects a Western storytelling style that focuses on the sudden 'spark' of an event. It is a staple of action movies and dramatic news headlines.

You might hear outbreak as a noun. This is very common in medical contexts, like a flu outbreak. There is also breakout used as an adjective, like a breakout star in a movie. This means someone who suddenly became famous. While the verb is often negative, the adjective for people is usually very positive. Language is funny like that!