PROFOUND
adjective. (-er, -est) 1 having or demanding great knowledge, study, or insight (profound treatise; profound doctrines). 2 intense, unqualified, thorough (a profound sleep; profound indifference). 3 deep (profound crevasses). ? profoundly adverb. Profoundness none. Profundity none. (plural. -ies). [latin profundus]