Rebated refers to a reduction or a deduction from a certain amount or price. Antonyms for the word "rebated" include increased, raised, augmented or elevated. These words imply that the amount or value has been enhanced rather than being reduced. Other antonyms for rebated include escalated, boosted, amplified or inflated, which all imply that something has been increased or made higher. Using these antonyms in place of rebated would completely alter the meaning of a sentence. It's important to use the right words to convey the intended meaning and to avoid confusion and miscommunication.