Antonyms for the phrase "does one's utmost" include half-hearted efforts, minimal attempts, and lackadaisical attitude. When someone is not putting in their best effort, they may be considered lazy, disinterested, or unmotivated. Opposite words to "does one's utmost" include apathetic, indifferent, nonchalant, and neglectful. Other antonyms to "does one's best" may consist of giving up, giving in or quitting. It is essential to bring our best to every task we undertake, and any hesitation or reluctance in doing so can lead to unsatisfactory results. Therefore, it is indispensable to stay motivated and enthusiastic in everything we do.