acknowledge (Verb) — Declare to be true or admit the existence or reality or truth of. ex. "She acknowledged that she might have forgotten"
acknowledge (Verb) — Report the receipt of. ex. "The program committee acknowledged the submission of the authors of the paper"
acknowledge (Verb) — Express recognition of the presence or existence of, or acquaintance with. ex. "She acknowledged his compliment with a smile" ex. "it is important to acknowledge the work of others in one's own writing" ex. "He never acknowledges his colleagues when they run into him in the hallway"
acknowledge (Verb) — Express obligation, thanks, or gratitude for. ex. "We must acknowledge the kindness she showed towards us"
acknowledge (Verb) — Accept as legally binding and valid. ex. "acknowledge the deed"
acknowledge (Verb) — Accept (someone) to be what is claimed or accept his power and authority. ex. "The Crown Prince was acknowledged as the true heir to the throne"