profound

Meanings

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

1. The deep; the sea; the ocean.
2. An abyss.

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

Etymology

From Middle English profound, profounde, from Anglo-Norman profound, from Old French profont, profonde, from Latin profundus (“deep, profound”), from prō + fundus (“bottom; foundation”).