Of either of two complementary or mutually exclusive things.
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.
Extremely different; inconsistent; contrary; repugnant; antagonistic.
Facing, or across from.
In a complementary role to.
On another channel at the same time.
In an opposite position.
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 antonym.
An additive inverse.
Operating, functioning, or existing without additions or assistance; independent; able to be separate or separated.
A device that can operate on its own, rather than as an accessory for another device.
Something that is not a part of some series or sequence.