profound

showing intellectual penetration or emotional depth

“the differences are profound”

“a profound insight”

“a profound book”

“a profound mind”

of the greatest intensity; complete

“a profound silence”

“a state of profound shock”

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

“the fundamental revolution in human values that has occurred”

“the book underwent fundamental changes”

“committed the fundamental error of confusing spending with extravagance”

“profound social changes”

coming from deep within one

“a profound sigh”

(of sleep) deep and complete

“a heavy sleep”

“fell into a profound sleep”

“a sound sleeper”

“deep wakeless sleep”

situated at or extending to great depth; too deep to have been sounded or plumbed

“the profound depths of the sea”

“{'source': 'Thomas Gray', 'text': 'the dark unfathomed caves of ocean'}”

“unplumbed depths of the sea”

“remote and unsounded caverns”