Un-likeliness refers to something that is improbable or unlikely. There are various synonyms for this word that can be used to indicate the same meaning such as improbability, unlikelihood, uncertainty, doubtfulness, implausibility, hesitancy, skepticism, incredulity, hesitation, and disbelief. Each synonym has its own nuance of meaning, but they all share the common thread of expressing uncertainty and skepticism. These synonyms can be useful in a variety of contexts, from describing a risky investment to evaluating the chances of success in a new venture. Whatever the context, using one of these synonyms can help to convey a clear impression of the likelihood or unlikelihood of a particular outcome.