Deface means to spoil or ruin the appearance of something. Some antonyms for deface could be to enhance, beautify, adorn, embellish, or decorate. Enhancing could mean adding more elements to something to make it better. Decorating can be adding colours and patterns to beautify an object. Embellishing means to add decorative details to an object to make it more attractive. Beautifying means to enhance the aesthetic appeal of something. Instead of defacing something, we can always find ways to make it even better and more attractive. Doing so also shows respect for someone else's property and efforts.