The word "inappurtenant" can be quite confusing to some individuals, especially when trying to find its antonyms. However, with careful consideration, it is possible to find words that mean the opposite of "more inappurtenant." Some antonyms could be "relevant," "appropriate," "necessary," or "pertinent." These words are the opposite of "inappurtenant" because they better suit a particular context or situation, and are therefore more valid or essential. Another antonym could be "germane," which implies that something is directly connected or relevant to a particular matter. In summary, antonyms for "more inappurtenant" are words that hold more value and meaning in a specific context.