Incorporeally is an adverb that refers to something being without a physical body or form. There are a variety of other words that can be used to describe the same idea. Ethereally is one such synonym, which implies an otherworldly or celestial quality. Immaterially is another word that conveys a similar idea, indicating that something lacks physical substance. Ghostly and phantomlike are also synonyms for incorporeally, evoking a sense of unreality or spectral presence. Ultimately, the choice of word will depend on the context of the sentence and the shade of meaning that best captures the writer's intended message.