opposite

Machine-translated from the German article

The opposite of a thing or a property is, in colloquial usage, usually a thing or a property that represents a kind of mirror image of the first-mentioned one around an imagined central point. Thus, colloquially, the opposite of large is small, because large and small are felt to be equally far from the imagined central point "normally large". The opposite of tiny, however, would be huge, since the perceived distance from tiny to normally large is felt to be greater than it would be in the case of the simple "small".