Through vs Throughout

When to use each in English, with meaning, register, and examples.

 ThroughThroughout
MeaningIn one side and out the other.In every part or all the time during a period.
CEFR levelA1B1
Part of speechpreposition
Usage notesUse 'through' to indicate movement from one side to another. Common with tunnels, paths, and processes. Avoid using it for non-physical experiences.Use 'throughout' to indicate that something happens or exists in every part of a time frame or area. It's appropriate for both written and spoken contexts, but avoid it in very casual communication where simpler alternatives are preferred.

Frequently asked questions: Through vs Throughout

What's the difference between "Through" and "Throughout"?

"Through" means: In one side and out the other. "Throughout" means: In every part or all the time during a period.

When should I use "Through" and "Throughout"?

They can all be used in everyday English.

Are "Through" and "Throughout" the same CEFR level?

"Through" is at A1, "Throughout" is at B1 on the CEFR scale.

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