When we talk about being at opposite extremes, it refers to being at the farthest possible points from each other on a particular scale or spectrum. To express this concept in other ways, we could use alternative phrases such as "polar opposites," "having completely different points of view," or "being in complete contrast with each other." Other useful synonyms for this phrase include "utterly opposed," "completely divergent," and "radically different." The phrase can also be expressed using more specific terms such as "diametrically opposed" or "antithetical," which emphasize the opposing nature of the two extremes. Regardless of the phrasing used, the idea remains clear: the two things being discussed could hardly be more different from each other.