Calceiform is a term that refers to something in the shape of a shoe or boot. It can be used to describe various objects, such as plants, animals, and even works of art. However, if you're looking for synonyms to replace the word calceiform, there are several options you can choose from. Some of these include boot-shaped, shoe-like, shaped like a clog, or resembling a moccasin. Other possibilities are foot-shaped, hoof-shaped, and camel-toe shaped. Whatever synonym you choose to use, it should convey the idea of something that is in the shape of a shoe or boot to your readers.