The phrase "most bad looking" has a negative connotation, as it suggests something is unattractive or unsightly. Antonyms for this phrase could include words such as attractive, appealing, stunning, or beautiful. These words all connote positivity and are used to describe things that are pleasing to the eye. Other antonyms for "most bad looking" might include complimentary terms such as fashionable, chic, elegant, or sophisticated. Regardless of the specific antonyms chosen, each one serves to contrast the original phrase, highlighting the positive potential that exists in even the least attractive of objects.