English definition of “acknowledge”
/əkˈnɒlɪdʒ/ verb [T]
ACCEPT › to accept that something is true or exists: [+ (that)] He acknowledged that there was a problem.
LETTER › to tell someone, usually in a letter, that you have received something they sent you: Send a letter acknowledging receipt of his application.
SAY HELLO › to let someone know that you have seen them, usually by saying hello: She didn't even acknowledge my presence.