To admit or profess a knowledge of; avow to be within one's knowledge or apprehension; own to be real or true; recognize the existence, truth, or fact of: as, to acknowledge God, or the existence of or belief in a God; to acknowledge the rights of a claimant.
To express or manifest perception or appreciation of; give evidence of recognizing or realizing: as, to acknowledge an acquaintance by bowing; to acknowledge a favor or one's faults.
To own the genuineness of; own as binding or of legal force: as, to acknowledge a deed.
To admit or certify the receipt of; give information of the arrival of: as, to acknowledge a letter or a remittance.