acknowledgeac·knowl·edge /əkˈnɒlɪdʒ-ˈnɑː-/ verb [transitiveT]1to tell someone that you have received something such as a letter they have sent to youWe shall be grateful if you will kindly acknowledge receipt of this letter.
2to admit or accept that something is true or existsThe government acknowledged that there had been irregularities at a number of voting centres.