The phrase "most on-a-tear" implies a sense of being on a roll or achieving success consistently. The opposite of this phrase would be an individual who is struggling to succeed or not making progress. Antonyms for "most on-a-tear" include "stagnant," "struggling," "sluggish," and "unproductive." These words suggest a lack of movement, growth, or advancement in a given situation. "Unfocused," "disorganized," "inefficient," and "ineffective" are also antonyms of "most on-a-tear," implying a lack of direction or purpose towards achieving one's goals. It is essential to recognize these opposite aspects to the phrase "most on-a-tear," not just in language, but also in life, as it can aid in personal growth and progress.