The phrase "brought to fruition" implies that a project, plan or idea has been successfully completed or achieved. Antonyms for this phrase would be words that signify an inability to bring something to completion, such as failing, abandoning, discontinuing, or terminating. These words suggest a lack of progress, a sense of disappointment or even a lack of motivation. Other antonyms could include delaying, stalling, or procrastinating, which imply a willingness to continue but a lack of urgency or focus. These words offer an opposite perspective to the idea of completion, indicating that the path to success can be rocky, and the journey towards achieving a goal is not always straightforward.