Meaning

adjective showing intellectual penetration or emotional depth

adjective of the greatest intensity; complete

adjective far-reaching and thoroughgoing in effect especially on the nature of something

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

Etymology from Wiktionary, CC BY-SA 3.0