The antonyms for the phrase "talked idly" are discussed meaningfully, deliberated thoughtfully, debated seriously, and conversed purposefully. When one engages in idle talk, they are usually engaging in aimless, trivial or meaningless chatter. Using antonyms such as the ones mentioned above, replaces this mindless chatter with purposeful conversation that encourages thoughtful and meaningful interactions. Meaningful conversations help deepen relationships, build trust, and foster growth. Therefore, it is essential to engage in purposeful and meaningful conversations, which help us learn and understand diverse perspectives, strengthen our relationships, and promote growth and development.