Desert is a word that has multiple meanings, and consequently, it has several antonyms depending on its context. In its sense as a barren area of land or a wasteland, fertile or lush regions would be its antonyms. In the culinary sense of dessert, savory or salty would be its antonyms. In a military sense, it could mean a person who has left their post without permission, and the antonym would be loyal or obedient. As a verb, desert means to abandon, and the antonym would be to stay or remain. Therefore, the antonyms of desert will depend on the definition of the word used in the context.