The antonyms for the word "multi form" would be singular or uniform. While "multi form" refers to something that has multiple forms or variations, its antonyms imply the opposite - something that is consistent, homogeneous, or singular in nature. For instance, a uniform dress code implies that everyone is dressed in the same way, while a multi-form dress code allows for various styles and types of clothing. Similarly, a single image or artwork that has no variations can be seen as the antonym of a multi-form artwork that features various shapes, sizes, colors, and textures.