Any adjective that is not gradable.
That cannot be graded.
(of an adjective) Describing a quality that cannot normally be varied because it is extreme (e.g. freezing), absolute (e.g. dead), or classification (e.g. nuclear).
An antonym.
Something opposite or contrary to something else.
An opponent.
A person or thing that is entirely different from or the reverse of someone or something else; used to show contrast between two people or two things.
An additive inverse.
In an opposite position.
Facing in the other direction.
Of leaves and flowers, positioned directly across from each other on a stem.
Located directly across from something else, or from each other.
Of either of two complementary or mutually exclusive things.
Extremely different; inconsistent; contrary; repugnant; antagonistic.
Facing, or across from.
In a complementary role to.
On another channel at the same time.