The word "un-likest" is not a widely used term in the English language. It is an adjective used to describe something or someone that is completely unlike or dissimilar to something else. However, there are various synonyms that can be used in place of this word. Some of the synonyms include "least similar," "most dissimilar," "opposite," "contrary," "different," "unrelated," "unfamiliar," and "incompatible." These words provide a more precise and concise description of the concept of being unlike or dissimilar. Whether you are a writer, reader or communicator, it's important to have a rich vocabulary that enables you to convey your thoughts effectively and accurately.