The word "re-touching" refers to the process of correcting, modifying, or enhancing an image, photograph or artwork. Some antonyms that can be related to this word are "undoing," "damaging," and "detracting." While re-touching can improve the appearance of an image, undoing has the opposite effect and may lead to the loss of vital elements in the artwork. Doing this "damages" the image rather than enhancing it, and detracting reduces the quality of the image instead of adding value to it. So, it is essential to choose the words that suit the desired outcome of the image editing process.