词根：rap, rav(rep) = to take, to snatch（攫取）

  来自拉丁语的rap,rav意为to take,to snatch。rap中元音弱化后变成rep。同义词根有来自拉丁语的prehend/prehens,pris,cap/capt/cept/ceiv(cip,cup,ceit),empt/em,sump/sumpt,lab/lep等。
  （*拉丁文rapere(=to snatch,to seize,to grasp)——英文字根字典）

同源词：

1. surreptitious（向下抓住、采用的sur<sub(=under) + rep<rap(=take)
  adj.秘密的；鬼鬼祟祟的
  That handsome dude over there is stealing surreptitious glances at you.那边那个帅哥正在向你暗送秋波呢

2. ravage（被抢夺或被夺取的状态 rav(=take,seize)
  n.破坏；荒废；(pl.)破坏后的残迹
  vt.破坏，使荒废；（军队等）劫持
  The lion ravaged the zebra until nothing was left but bones.狮子将一匹斑马吞食得只剩下骨头。

3. rape
  n./v.抢夺；强奸
  rapist n.强奸犯

4. rapaclous
  adj.（尤其指对金钱）贪婪的，掠夺的
  rapacity n.贪婪

5. rapid
  adj.（速度）快的；陡峭的
  n.(pl.)急流
  rapidity n.迅速，急速
  rapidly adv.快地，迅速地

6. rapine
  n.抢夺，掠夺

7. rapt
  adj.着迷的，埋头的
  with rapt attention 全神贯注地
  rapt in a book埋头读书的

8. rapture
  n.狂喜，高兴；着迷
  rapturous adj.狂喜的
  go into raptures over着迷于...

9. enrapture
  v.使狂喜 *en(=make)

10. raven
  n.渡鸦（通常被看做不吉利的鸟）
  adj.（毛发等）乌黑的
  v.掠夺
  raven locks 乌黑的头发
 
11. ravening
  adj.空腹觅食的；狼吞虎咽的
  ravening wolf 觅食的饿狼

12. ravenous
  adj.狼吞虎咽的，非常饥饿的；贪婪的
  ravenous appetite 极好的胃口
  ravenous hunger 极度的饥饿
  ravenous for power贪图权力的

13. ravine
  n.峡谷

14. ravish
  v.使狂喜；使陶醉；掠夺
  ravishingly adv.狂喜地；陶醉地
  ravishment n.陶醉；狂喜
  ravishing view 令人陶醉的景色
  ravished with her beauty 被她的美貌逮住

词根词缀：cleido-, cleid-, clido-, clid-

【来源及含义】Greek: key; a means of locking or a thing that locks [or unlocks] a door; a key, bar, or hook; a combining form that denotes the clavicle or collarbone

【同源单词】cleidal, cleidarthritis, cleidocostal, cleidocranial, cleidohumeral, cleidohyoid

词根词缀：nom-, nomo-

【来源及含义】Greek: a meadow; a pasture; an abode; a place for eating; by extension, "distribution of an acute, necrotizing ulcerative process involving mucous membranes of the mouth or genitalia"

【相关描述】Don’t confuse this element with the Greek nomo- which means "law" or another Latin nom- meaning "name".

This element is closely related to nomad- which means “wander, moving around for pasture or grazing for herds or flocks”.

【同源单词】noma, nomocole, nomophile, nomophilous, pronomos

词根词缀：nomad-

【来源及含义】Greek, nomas, nomados, "pasturing, roaming about for pasture" > Latin , nomas, nomdis: wander, moving around for pasture or grazing for herds or flocks

【相关描述】Closely related to nomo-, "a pasture" or "a place for grazing".

【同源单词】nomad, nomadic, nomadical, nomadically, nomadism, nomadize