The term 'diametrically opposite' is used to describe two things that are completely different from each other. The crossword solution for this term is 'POLAR', which refers to two opposite points on a circle or sphere. POLAR opposites are two points that are the furthest apart from each other, and they can be found in many different contexts. For example, in politics, two parties may have diametrically opposite views on a particular issue. In terms of geography, the North and South Poles are POLAR opposites. In terms of emotions, happiness and sadness are often seen as POLAR opposites.