Acknowledge vs Congratulate

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

Acknowledge

Top 2,000 (common)B2verb

Congratulate

Top 2,000 (common)C1verb
 AcknowledgeCongratulate
Pronunciation🇬🇧 //əkˈnɒlɪdʒ//🇺🇸 //ækˈnɑːlɪdʒ//🇬🇧 /["/kənˈɡrætʃəleɪt/","/kənˈɡrætʃəleɪts/","/kənˈɡrætʃəleɪtɪd/","/kənˈɡrætʃəleɪtɪŋ/"]/🇺🇸 /["/kənˈɡrætʃəleɪt/","/kənˈɡrætʃəleɪts/","/kənˈɡrætʃəleɪtɪd/","/kənˈɡrætʃəleɪtɪŋ/"]/
MeaningTo accept or notice something.To tell someone that you are happy for their success.
ExampleShe didn't acknowledge my presence at the meeting.I congratulated them all on their results.
RegisterNeutralNeutral
How commonTop 2,000 (common)Top 2,000 (common)
CEFR levelB2C1
Part of speechverbverb
Collocationsacknowledge receipt, acknowledge contributions, acknowledge existenceheartily, warmly, personally, have to, must, want to, for, on, somebody is to be congratulated, to join somebody in congratulating somebody
Antonymsdeny, ignore, rejectcriticize, blame
Common mistakesConfused with 'recognize' - 'acknowledge' emphasizes recognition of existence or truth., Using incorrect prepositions, e.g., 'acknowledge to' instead of 'acknowledge'.Confusing 'congratulate' with 'compliment', Using it without an object, like saying 'I congratulate' instead of 'I congratulate you', Saying 'congratulations for' instead of the correct 'congratulations on'
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.

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Congratulate

Frequently asked questions: Acknowledge vs Congratulate

What's the difference between Acknowledge and Congratulate?

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

Which is more advanced: Acknowledge and Congratulate?

Congratulate is the highest level, at C1, on the CEFR scale.

Are Acknowledge and Congratulate the same CEFR level?

Acknowledge: B2, Congratulate: C1 on the CEFR scale.

What part of speech are Acknowledge and Congratulate?

Acknowledge: verb, Congratulate: verb.

Can you show an example of each?

Acknowledge: She didn't acknowledge my presence at the meeting. Congratulate: I congratulated them all on their results.

Can I use Acknowledge and Congratulate interchangeably?

Not always. Acknowledge and Congratulate are related and overlap in some contexts, but they differ in register, how common they are, and usage, so swapping one for another can change the meaning or tone. Check the differences above before substituting.

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