transitive verb | ac·knowl·edge
  1. : to indicate recognition and acceptance of the power of taxation in the general and state governments is acknowledged to be concurrent —McCulloch v. Maryland, 17 U.S. 316 (1819)

  1. a : to show by word or act that one has knowledge of and accepts responsibility for (a duty, obligation, or indebtedness)

    b : to admit paternity of will acknowledge the child as his — compare filiate

  1. : to make known to a sender or giver the receipt of (what has been sent or given) or the fact of (one's having received what has been sent or given) acknowledge receipt of a letter

  1. : to recognize as genuine so as to give validity : avow or admit in legal form the execution of any such power of attorney shall be acknowledged before one of the officers —U.S. Code