The term "most ill-famed" refers to a person, place, or thing that is widely known for its notoriety, negative reputation, or infamy. Antonyms for "most ill-famed" could include the words: admired, respected, esteemed, celebrated, distinguished, honorable, renowned, and esteemed. These words indicate a great deal of respect and admiration usually conferred on a person or a place that is widely regarded as a positive influence in society. While "most ill-famed" would typically refer to something with a negative connotation, describing something or someone as one of the antonyms mentioned above would suggest the opposite.