Antonyms for the term "tuning down" are phrases or words that describe the opposite action or meaning. Some antonyms for tuning down include amplifying, increasing, boosting, raising, or elevating. These antonyms signify the act of increasing the volume or intensity, or making something more important or significant. For example, if someone turns down the volume of their music, the opposite action would be to amplify the sound or increase the volume. Similarly, if someone reduces the importance of a particular topic, the antonym would be to elevate or raise its significance. Using antonyms is a great way to enhance your language and communication skills.