The phrase "am of the same mind" implies agreement and unity of thought or opinion. Antonyms for this phrase would be words or phrases that indicate disagreement, discord, or divergence of opinions. Some possible antonyms could include "disagree," "be at odds," "hold a different view," "have conflicting opinions," "dissent," "contrast," "oppose," "be in conflict," or "clash of interests." These antonyms indicate a lack of agreement or unity and highlight the differences in perspectives or views held by different individuals or groups. It is important to acknowledge and understand these differences to have meaningful discussions and find common ground.