External vs Outside

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

 ExternalOutside
MeaningRelating to the outside or outer part.Not inside; in the open air.
CEFR levelB2A1
Part of speechadjectiveadverb
Usage notesUse 'external' when referring to things on the outside, like a person's external features. Avoid using it in very casual speech.Use 'outside' when referring to places that are open or not enclosed. Avoid in formal writing where 'external' might be preferable.

Frequently asked questions: External vs Outside

What's the difference between "External" and "Outside"?

"External" means: Relating to the outside or outer part. "Outside" means: Not inside; in the open air.

When should I use "External" and "Outside"?

They can all be used in everyday English.

Are "External" and "Outside" the same CEFR level?

"External" is at B2, "Outside" is at A1 on the CEFR scale.

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