The phrase "doth one's best" implies giving maximum effort and performing to the best of one's abilities. Antonyms for this phrase can include half-hearted, lackluster, careless, negligent, and disinterested. These antonyms suggest a lack of diligence, enthusiasm, or commitment towards a task. Other antonyms for "doth one's best" can be underperforming, unproductive, or inefficient, denoting an inability to deliver expected results. The opposite of "doth one's best" can also be described as mediocre, substandard, or inadequate, indicating a deficiency in performance or output. In conclusion, antonyms for "doth one's best" carry negative connotations and signify a failure to meet expectations.
