Non starters are actions or events that fail to take off or achieve their intended purpose. When looking for antonyms of non-starters, we can consider words that signify success, forward movement, or achievements. Some potential antonyms include successful, profitable, effective, thriving, flourishing, and fruitful. Other antonyms for non-starters may include accomplished, fruitful, productive, thriving, and successful. These words convey the sense of progress and achievement, which stands in contrast to non-starters. By focusing on these antonyms, we can better understand success as a dynamic, iterative process, characterized by the accumulation of positive outcomes over time.