The word "un equivalent" is a French word that means "unequal." As it indicates, it is the antonym of the word "Equivalent," which means "equal." There are several antonyms for the word "un equivalent," which include "similar," "comparable," "identical," "equivalent," "matched," and "even." These words represent things or objects that are identical, equal, or equivalent to each other. On the other hand, "un equivalent" represents things that are not the same, unequal, or unmatched. Antonyms play a significant role in language and communication, helping in making clear expressions and conveying the right message.