opposite

Placed or located directly across from something else or from each other.

Facing the other way; moving or tending away from each other.

Being the other of two complementary or mutually exclusive things.

Altogether different, as in nature, quality, or significance.

Sharply contrasting; antithetical.

Growing in pairs on either side of a stem.

Arranged on the same radius as another part, as stamens and petals.

One that is opposite or contrary to another.