Profound

Descending far below the surface; opening or reaching to a great depth; deep.

Intellectually deep; entering far into subjects; reaching to the bottom of a matter, or of a branch of learning; thorough; as, a profound investigation or treatise; a profound scholar; profound wisdom.

Characterized by intensity; deeply felt; pervading; overmastering; far-reaching; strongly impressed; as, a profound sleep.

Bending low, exhibiting or expressing deep humility; lowly; submissive; as, a profound bow.

The deep; the sea; the ocean.

An abyss.

To cause to sink deeply; to cause to dive or penetrate far down.

To dive deeply; to penetrate.

of the greatest intensity; complete; "a profound silence"; "a state of profound shock"