A word which has the opposite meaning of another word.
A word that describes one end of a scale, while its opposite describes the other end, such as large versus small; a gradable antonym.
Corresponding; complementary.
Having the base, or end next to the attachment, narrower than the top.
Turned or facing toward the observer.
A proposition obtained by obversion, e.g. All men are mortal => No man is immortal.
The heads side of a coin, or the side of a medal or badge that has the principal design.