Antonyms for the phrase "lower the boom" can be "negotiate," "compromise," "agree," "concede," or "make peace." These words indicate a willingness to work together and find a solution to a problem without resorting to aggressive or authoritarian tactics. Lowering the boom implies a sudden and forceful response, while the antonyms suggest a more collaborative and cooperative approach. When we lower the boom, we cut off communication and the opportunity for resolution. However, by embracing antonyms for this phrase, we can cultivate a culture of understanding and mutual respect, which ultimately leads to more harmonious relations.