Antipodal opposition refers to the state of being completely opposite or diametrically opposed. Synonyms for this phrase include diametrical opposition, polar opposites, complete contrast, and utter disagreement. Other terms that can be used include complete oppositeness, complete dissimilarity, complete contradistinction, and complete variation. These phrases refer to the idea of two things being so different that they cannot find any common ground or agreement. They describe a situation where two concepts are at opposite ends of a spectrum and cannot be reconciled. Overall, these phrases convey the idea of extreme contrast and can be used in many contexts, such as in politics, science, and social interactions.