The phrase "dialing back" is commonly used to describe the act of reducing or lowering something. The antonyms for this phrase would mean the opposite, which is increasing or raising something. These words include amplifying, boosting, elevating, enhancing, magnifying, and strengthening. For instance, you can amplify the sound of a speaker or boost the signal of a cell phone to improve its reception. You can also strengthen a relationship by spending more time with someone or enhance the flavor of a dish by adding some spices. These antonyms for dialing back emphasize the idea of bringing something to a higher level or degree.