The phrase "most ever" signifies the maximum limit or degree possible. It is often used to indicate the extreme nature of a situation, event, or achievement. However, there are several antonyms for this phrase, which depict the opposite or the minimum limit. Some of the antonyms include the least ever, smallest ever, worst ever, lowest ever, and weakest ever. These antonyms denote a significant reduction or deterioration from the previous state, tossing aside any sense of achievement or success. Thus, while "most ever" reflects the epitome of excellence or accomplishment, its antonyms convey a sharp contrast, indicating failure or underperformance.