Extending far downward or inward from a surface.

• Long from front to back.

Profound or intense; not superficial.

• Complex or difficult to understand.

Low in pitch or register.

Having rich, strong, or dark color.

Positioned far from the center, near the boundary, in sports.

Very sound or heavy, hard to wake from.

Far into or through something; to a great extent.

• In a profound manner.

The sea or ocean; the deep part of water.

• The depths or innermost part of something.