The phrase "hadst one's say" means to express one's opinion or to be heard. The antonyms for this phrase can be "kept quiet," "remained silent," "held one's tongue," "restrained oneself," "didn't speak up," "didn't voice one's thoughts," or "didn't share one's views." These antonyms suggest a lack of expression, communication, or participation in decision-making. When individuals choose not to speak up or share their opinions, their perspectives can be overlooked or ignored, leading to a lack of diversity of thought and potentially undesirable outcomes. Therefore, it is essential to encourage active communication and differing viewpoints to create a well-informed and balanced decision-making process.