De-forming means the opposite of forming or shaping something. The antonyms for de-forming could be forming, shaping, molding, fashioning, constructing, building or creating. These words convey the action of making something into a particular shape or form. For instance, when a potter shapes a lump of clay into a vase or bowl, it is an act of forming or creating. Likewise, when a sculptor works on a piece of stone or wood, they are creating a shape or form that was previously absent. The antonyms of de-forming suggest the creative process of building up or forming an object in a particular way.