The phrase "hashed over" implies that something has been discussed or rehashed many times before. Antonyms for this phrase may include "fresh," "new," "original," or "innovative," suggesting that the topic or idea being discussed is not repetitive or tired. Other antonyms may include "unexplored," "untouched," or "untested," implying that the topic has not yet been fully explored or that there is room for new perspectives. Overall, opting for antonyms of "hashed over" can lead to more creative and engaging discussions, allowing for fresh ideas and perspectives to emerge.