- a heavy sleep.
- a profound book.
- a profound insight.
- a profound mind.
- a profound sigh.
- a profound silence.
- a sound sleeper.
- a state of profound shock.
- committed the fundamental error of confusing spending with extravagance.
- deep wakeless sleep.
- fell into a profound sleep.
- profound contempt.
- profound regret.
- profound social changes.
- remote and unsounded caverns.
- the book underwent fundamental changes.
- the dark unfathomed caves of ocean.
- the differences are profound.
- the fundamental revolution in human values that has occurred.
- the profound depths of the sea.
- unplumbed depths of the sea.