Multi-form is a word that is used to describe something that exists in many different forms or shapes. It could refer to anything that has multiple facets or variations, such as an art piece, a building, or a product. However, if we were to consider antonyms for multi-form, we would refer to something that is only one-dimensional or limited in scope. Words such as uniform, monotonous, or singular could be used as antonyms since they denote something that is the same or unchanging. In contrast, multi-form suggests diversity, plurality, and complexity, making it a valuable term for describing things that are versatile, dynamic, and multifaceted.