The phrase "bent one ear" typically refers to talking someone's ear off or pestering them with endless chatter. Antonyms for this phrase would include "listened attentively," "kept quiet," "gave them space," "kept the conversation brief," or "allowed them to speak." It's important to recognize when someone may not be interested in a conversation, and to respect their boundaries. By using these antonyms, you can show that you value the other person's time and opinions. In addition, communication becomes more effective when both parties have the opportunity to express themselves and listen to each other.