profound

Definitions

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

Equivalents

Examples

“God, in the fathomlesse profound / Hath all his choice Commanders drown'd.”

“[…]if some other place⟳, / From your dominion won, th' Ethereal King / Possesses lately, thither to arrive⟳ / travel⟳ this profound. Direct⟳ my course[…]”

CEFR level