The word retouch means to make small improvements or adjustments to something, especially a photograph or image. While there are many synonyms for the word retouch, there are a few antonyms too. The antonyms for the word retouch include neglect, adulterate, ruin, and vandalize. Neglect means to ignore or pay no attention to something or someone, while adulterate means to make something impure. Ruin means to destroy something completely, and vandalize means to cause intentional damage. These words represent the opposite of what retouching entails, which is fixing, enhancing, or improving something to make it better.