The word "un-contested" refers to something that has no opposition or competition. Its antonyms are words that describe the opposite of this meaning. These words include "challenged," "disputed," "controversial," "competed," "opposed," and "disagreed." These words are commonly used in debates, competitions, and other situations where opposing viewpoints or rivals are present. When something is contested, it means there is an active challenge or competition, in contrast to "un-contested," where there is no challenge or competition. Understanding the antonyms of "un-contested" can help to convey a clearer message in writing or conversation, depending on the context.