antipodes; diametrically opposite point
Refers to the exact opposite point on a sphere, especially the Earth. Often used in geographical or astronomical contexts.
Brazil is located almost at the antipodes of Japan.
opposite extreme; antithesis; polar opposite
Used for abstract concepts, opinions, or characteristics that are completely opposite. Common in discussions of contrasting ideas or positions.
His opinion is the polar opposite of mine.
Freedom and discipline seem to be at opposite extremes, but they can coexist.
His way of thinking is the polar opposite of my opinion.
This work stands in direct opposition to the previous one.
That country is positioned at the opposite extreme in economic policy.