The antonyms for the word "dis-acknowledges" are "acknowledges" and "recognizes". When we acknowledge someone, we are accepting and acknowledging their presence or contribution in a certain situation. On the other hand, when we dis-acknowledge someone, we are ignoring or denying their presence or contribution. To reject someone's contribution is not only unfair but also jeopardizes the reliability and validity of the process at hand. It is essential to acknowledge and recognize everyone's contribution and hard work in achieving the desired outcome. Failure to do so can lead to misunderstandings, mistrust, and conflicts among the parties involved. Therefore, we must acknowledge and appreciate everyone's efforts, irrespective of their roles and responsibilities.