Unearthlier is a form of the word "unearthly," which means something that is not of this world or is strange and unusual. Synonyms for unearthlier include supernatural, otherworldly, mystifying, mysterious, eerie, foreign, exotic, strange, abnormal, and unusual. Each of these words can be used to describe something that is beyond normal experience or understanding. Whether referring to a hauntingly beautiful place, a mystic experience or feeling, or an entity that defies explanation, the synonyms for unearthlier can evoke a sense of awe, wonder, and sometimes even fear. Using different terms when describing something unearthly can add depth to the description, allowing the reader to more vividly imagine the experience.