in case of (something)

if something unusual or unexpected should happen.

In case of fire, go immediately to the nearest emergency exit.

Related vocabulary: in the event of something

• something to call own
• something to call your own
• something to do with
• something to speak of
• something to write home about
• something up sleeve
• something up your sleeve
• something will never fly
• something won't bite
• somewhere along the line
• somewhere between
• somewhere in the neighborhood of
• somewhere in the neighborhood of something
• so much
• so much as
• so much for
• so much for something
• so much so
• so much the better
• so near and yet so far
• song and dance
• son of a bitch
• Son of a bitch!
• son of a gun
• Son of a gun!