Antonyms for the phrase "tries hardest" could be words or phrases such as "laziest," "gives up easily," "apathetic," "slothful," or "slackest." These antonyms represent the opposite of trying hard and imply a lack of effort, motivation, or dedication. They suggest a person who is not willing to put in the work, lacks enthusiasm, or lacks the drive to achieve their goals. While some people may be inherently lazy or disinterested in certain pursuits, it is essential to stay motivated, disciplined, and focused to reach our full potential and achieve excellence in all areas of life.