1. profound

showing intellectual penetration or emotional depth

Example Sentences:
'the differences are profound'
'a profound insight'
'a profound book'
'a profound mind'
'profound contempt'
'profound regret'

2. profound

of the greatest intensity; complete

Example Sentences:
'a profound silence'
'a state of profound shock'

3. fundamental, profound

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

Example Sentences:
'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'

• fundamental

• important
• significant

4. profound

coming from deep within one

Example Sentences:
'a profound sigh'

5. heavy, profound, sound, wakeless

(of sleep) deep and complete

Example Sentences:
'a heavy sleep'
'fell into a profound sleep'
'a sound sleeper'
'deep wakeless sleep'

• heavy
• sound
• wakeless

6. profound, unfathomed, unplumbed, unsounded

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

Example Sentences:
'the profound depths of the sea'
'the dark unfathomed caves of ocean'
'unplumbed depths of the sea'
'remote and unsounded caverns'

• unfathomed
• unplumbed
• unsounded