acknowledge · verb T /əkˈnɑl.ɪdʒ/Full view
acknowledge (ACCEPT)
C1 to accept that something is true or exists
Dictionary example:

He acknowledged that there was a problem.

Learner example:

Therefore, the most important lesson to learn is to acknowledge the necessity of education and t[o] strive to make it happen. (Certificate in Advanced English; C1; Polish)

acknowledge (SAY RECEIVED)
C1 to say, usually in writing, that you have received something that someone sent you
Dictionary example:

He sent a letter acknowledging receipt of her application.

Learner example:

Please could you acknowledge the rec[e]ipt of this letter. (Certificate in Advanced English; C1; Lithuanian)

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