pro·found

[pruh-found] adjective, pro·found·er, pro·found·est, noun
adjective
1.
penetrating or entering deeply into subjects of thought or knowledge; having deep insight or understanding: a profound thinker.
2.
originating in or penetrating to the depths of one's being; profound grief.
3.
being or going far beneath what is superficial, external, or obvious: profound insight.
4.
of deep meaning; of great and broadly inclusive significance: a profound book.
5.
pervasive or intense; thorough; complete: a profound silence.
6.
extending, situated, or originating far down, or far beneath the surface: the profound depths of the ocean.
7.
low: a profound bow.
noun Literary.
8.
something that is profound.
9.
the deep sea; ocean.
10.
depth; abyss.
00:10
Profound is a PSAT word you need to know.
So is enhance. Does it mean:
tranquil; calm; placid
de cao, lam noi bat

Origin:
1275–1325; Middle English < Anglo-French < Latin profundus deep, vast, equivalent to pro- pro-1 + fundus bottom (see found2)

pro·found·ly, adverb
pro·found·ness, noun
un·pro·found, adjective
un·pro·found·ly, adverb


1. deep, sagacious.


1. shallow, superficial.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2013.
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World English Dictionary
profound (prəˈfaʊnd) [Click for IPA pronunciation guide]
 
adj
1.  penetrating deeply into subjects or ideas: a profound mind
2.  showing or requiring great knowledge or understanding: a profound treatise
3.  situated at or extending to a great depth
4.  reaching to or stemming from the depths of one's nature: profound regret
5.  intense or absolute: profound silence
6.  thoroughgoing; extensive: profound changes
 
n
7.  archaic, literary or a great depth; abyss
 
[C14: from Old French profund, from Latin profundus deep, from pro-1 + fundus bottom]
 
pro'foundly
 
adv
 
pro'foundness
 
n
 
profundity
 
n

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Etymonline
Word Origin & History

profound
c.1300, "characterized by intellectual depth," from O.Fr. profund (late 12c.), from L. profundus "deep, bottomless, vast," also "obscure, profound," from pro- "forth" + fundus "bottom" (see fund (n.)). The literal and figurative senses both were in Latin, but English, already
having deep, primarily employed this word in its figurative sense.
Online Etymology Dictionary, © 2010 Douglas Harper
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Example sentences
More than an ancient artistic impulse, it may signify a profound change in
  modern human brains.
Apple's innovations are powerful and profound, but they are often in the realms
  of design, consumer use and marketing.
Religious and cultural beliefs are having a profound affects on our world.
It's message about life was as profound and simple, yet hidden by the sinful
  goodness of the candy.
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