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 To Deepen Verb Make Sth Deepened Deep Deeper

Title deepen
Text
Merriam-Webster's Collegiate Dictionary
deep·en

 \\ˈdē-pən\\ verb 
(deep·ened ; deep·en·ing 
 \\ˈdē-pə-niŋ, ˈdēp-niŋ\\)
 DATE  1598
transitive verb
: to make deep or deeper
intransitive verb
: to become deeper or more profound
English Etymology
deepen
  c.1600, from deep (adj.). The earlier verb had been simply deep, from O.E. diepan.
Oxford Advanced Learner's Dictionary-牛津双解-OALD7
deepen
deep·en 5di:pEn / verb1. if an emotion or a feeling deepens, or if sth deepens it, it becomes stronger
   (使情感、感觉等)加强,变强烈:
   [V] 
   Their friendship soon deepened into love. 
   他们的友谊很快发展成为爱情。 
   [also VN] 
2. to become worse; to make sth worse
   (使)变糟,恶化,严重:
   [V] 
   Warships were sent in as the crisis deepened. 
   危机加重时舰艇便奉命来到现场。 
   a deepening economic recession 
   越来越严重的经济衰退 
   [also VN] 
3. to become deeper; to make sth deeper
   (使)变深;加深:
   [V] 
   The water deepened gradually. 
   水渐渐变深了。 
   His frown deepened. 
   他的眉头皱得更紧了。 
   [VN] 
   There were plans to deepen a stretch of the river. 
   曾经有过加深一段河道的计划。 
4. [VN] to improve your knowledge or understanding of sth
   增长(知识);加深(理解):
   an opportunity for students to deepen their understanding of different cultures 
   学生加深理解不同文化的机会 
5. [V , VN] if colour or light deepens or if sth deepens it, it becomes darker
   (使色泽等)变浓;(使)变昏暗:
   deepening shadows 
   越来越暗的阴影 
6. if a sound or voice deepens or if you deepen it, it becomes lower or you make it lower
   (使声音)变低沉:
   [V] 
   His voice deepened to a growl. 
   他的声音变成了低沉的怒吼。 
   [also VN] 
7. [V] if your breathing deepens, you breathe more deeply than usual
   深(呼吸);喘(大气)
Merriam-Webster's Collegiate Thesaurus-11th Edition
v. Function: verb 

Synonyms: 
INTENSIFY
, aggravate, enhance, heighten, intensate, magnify, mount, redouble, rise, rouse
Webster's Third New International Dictionary, Unabridged
deep·en
\ˈdēpən, -pəm\ verb
(deepened \-pənd, -pəmd\ ; deepened \“\ ; deepening \-p(ə)niŋ\ ; deepens \-pənz, -pəmz\)
transitive verb
: to make deep or deeper: as
 a. : to increase the depth of
  deepen a well >
  deepen a channel >
 b. : to make more intense
  < the incident deepened the gloom >
  or more profound
  deepened the meaning of his life >
 c. : to increase in degree
  deepen sorrow >
 d. : to make lower in tone or range of pitch
  deepen a pipe organ >
intransitive verb
: to become deeper
 < the water deepened at every step >
: grow more profound or obscure
 < with every day the mystery deepens >

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