acknowledge

declare to be true or admit the existence or reality or truth of

He admitted his errors

report the receipt of

The program committee acknowledged the submission of the authors of the paper

express recognition of the presence or existence of, or acquaintance with

He never acknowledges his colleagues when they run into him in the hallway

express obligation, thanks, or gratitude for

We must acknowledge the kindness she showed towards us

accept as legally binding and valid

acknowledge the deed