The antonyms for the word "being equivalent" include words like unequal, dissimilar, unmatched, unalike, and different. While being equivalent suggests a similarity or equality between two things, the antonyms suggest a lack of similarity or equality. If two things are unequal, they differ in value or size. If they are dissimilar, they are unlike or distinct from each other. If they are unmatched, they cannot be compared or equaled. Similarly, if they are unalike or different, they are not the same or equivalent in nature. By understanding the antonyms of the word "being equivalent," one can better grasp the diversity and complexity of language.