The antonyms for the term "dialled back" are "amped up," "intensified," "escalated," "exaggerated," and "maximized." When we say "dialled back," it means we have reduced or lessened the intensity, force, or magnitude of something. The word is usually used in reference to a situation where someone is trying to tone down their behavior or words to be more in control. However, if the opposite is intended, we use the antonyms to convey the message more effectively. For instance, if someone wants to heighten a situation, they can say that they've "amped up" their actions instead of saying they've "dialled them back.