The antonyms for the word "amount charge" include "discount," "rebate," "refund," "decrease," "lessen," "reduce," "slash," "lower," and "minimize." These words indicate a reduction or a decrease in the amount of money being charged for a particular product or service. For example, a discount price is a reduced fee while a rebate is a partial refund of the original price paid. A decrease in the required amount charge is also an antonym for the term. Using antonyms in your communication and writing can help add variety, depth, and clarity to your overall message.