Alter vs Modify

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

 AlterModify
MeaningTo change something.Change something to make it better or different.
CEFR levelB2B2
Part of speechverbverb
Usage notesUse 'alter' when you want to indicate a change or modification. It is more formal than 'change'. Avoid using it for very minor or trivial adjustments.Use 'modify' when discussing changes to plans, documents, or objects. It's neutral, so it's appropriate in most contexts, such as academic or business settings.

Frequently asked questions: Alter vs Modify

What's the difference between "Alter" and "Modify"?

"Alter" means: To change something. "Modify" means: Change something to make it better or different.

When should I use "Alter" and "Modify"?

They can all be used in everyday English.

Are "Alter" and "Modify" the same CEFR level?

"Alter" is at B2, "Modify" is at B2 on the CEFR scale.

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