1.Definition: (of sleep) deep and complete
"Fell into a profound sleep"
2.Definition: coming from deep within one
"A profound sigh"
3.Definition: far-reaching and thoroughgoing in effect especially on the nature of something
"Profound social changes"
4.Definition: of the greatest intensity; complete
"A profound silence", "A state of profound shock"
5.Definition: showing intellectual penetration or emotional depth
"The differences are profound", "A profound insight", "A profound book", "A profound mind", "Profound contempt", "Profound regret"
6.Definition: situated at or extending to great depth; too deep to have been sounded or plumbed
"The profound depths of the sea"