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.
Descending far below the surface; opening or reaching to great depth; deep.
Very deep; very serious
Intellectually deep; entering far into subjects; reaching to the bottom of a matter, or of a branch of learning; thorough
Characterized by intensity; deeply felt; pervading
Bending low, exhibiting or expressing deep humility; lowly; submissive