The term "most commending" refers to something that is widely appreciated or praised by others. Antonyms of this phrase include "least commendable," which refers to something that is not worthy of praise or approval, and "criticized," which describes something that has been the subject of negative feedback or disapproval. Other antonyms may include "reviled," "disliked," and "condemned," all of which suggest a lack of appreciation or approval for the thing being described. In general, antonyms of "most commending" are words that describe something that is not well-regarded or respected, and that may be subject to criticism or negative feedback.