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.