Coextending refers to two or more things that exist or extend at the same level or range. Therefore, antonyms for coextending would include words that indicate opposites, differences or a lack of alignment between two or more things. For example, antonyms for coextending can include words such as divergent, distinct, separate, apart, independent or distant. These words suggest that two or more things do not align, overlap, or extend at the same level or range. Therefore, they are opposite in direction, distance, or magnitude. Antonyms for coextending help to describe different or isolated entities that have little or no relation to each other.