The phrase "am supreme" denotes a sense of power and dominance, but there are several antonyms that convey the opposite meaning. Some of the antonyms of "am supreme" include inferior, weak, powerless, and submissive. The antonym "inferior" implies being lower in rank, value or quality, while the term "weak" denotes a lack of strength or capability. The word "powerless" means being devoid of power or control, and the antonym "submissive" implies a state of meekness and helplessness. In essence, the antonyms of "am supreme" convey a sense of weakness and vulnerability, which is the antithesis of being dominant and powerful.