Acknowledge vs Congratulate

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

 AcknowledgeCongratulate
MeaningTo accept or notice something.To tell someone that you are happy for their success.
CEFR levelB2C1
Part of speechverbverb
Usage notesUse 'acknowledge' when formally recognizing someone's contribution or existence. Avoid in overly casual contexts.Use this word when someone achieves something, like a birthday or a promotion. It's neutral and suitable for both formal and informal situations.

Frequently asked questions: Acknowledge vs Congratulate

What's the difference between "Acknowledge" and "Congratulate"?

"Acknowledge" means: To accept or notice something. "Congratulate" means: To tell someone that you are happy for their success.

When should I use "Acknowledge" and "Congratulate"?

They can all be used in everyday English.

Are "Acknowledge" and "Congratulate" the same CEFR level?

"Acknowledge" is at B2, "Congratulate" is at C1 on the CEFR scale.

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