Verb
1. declare to be true or admit the existence or reality or truth of;
"He admitted his errors""She acknowledged that she might have forgotten"2. report the receipt of;
"The program committee acknowledged the submission of the authors of the paper"3. express recognition of the presence or existence of, or acquaintance with;
"He never acknowledges his colleagues when they run into him in the hallway""She acknowledged his complement with a smile""it is important to acknowledge the work of others in one's own writing"4. express obligation, thanks, or gratitude for;
"We must acknowledge the kindness she showed towards us"5. accept as legally binding and valid;
"acknowledge the deed"6. accept (someone) to be what is claimed or accept his power and authority;
"The Crown Prince was acknowledged as the true heir to the throne""We do not recognize your gods"