in case

Idioms  

1. Also, just in case . If it should happen that. For example, In case he doesn't show up, we have a backup speaker . The variant also is used without a following clause to mean simply “as a precaution,” as in I took an umbrella just in case . [c. 1400]

2. in case of ; in the event of . If there should happen to be. For example, Here is a number to call in case of an emergency , or In the event of a power failure, we'll have to shift our plans . Similarly, in that case means “if that should happen,” as in You're alone in the store? In that case I'll bring your lunch . The first usage dates from the early 1700s, the second (with event ) from about 1600, and the third from the mid-1800s. Also see in any case ; in no case ; in the case of .

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Example Sentences

In case you’ve forgotten the events of 2014’s “The Lego Movie,” it’s about a group of heroes resisting the conformist authoritarianism of a ridiculous figure called President Business, also known as the despotic Lord Business.

From Salon • Apr. 26, 2026

In case anyone detects ambiguity in this clause, Article 6, though almost never cited, states the matter explicitly:

From Slate • Apr. 9, 2026

In case you were in any doubt, just look at the frenzy surrounding the South Koreans' comeback.

From BBC • Mar. 20, 2026

In case the intent of her post wasn’t clear, Walt Disney Studios also shared her video across its social media accounts.

From Los Angeles Times • Mar. 10, 2026

In case you haven’t noticed, that’s how it always is with adults—just when someone starts telling the interesting stuff, someone else shuts him up.

From "The Old Willis Place" by Mary Downing Hahn