词根：fil = thread（线）, to spin（纺织）, foul（脏）

  来源于拉丁语的filum(=thread,to spin)。

同源词：

1. defile [使变得非常脏de(=intensive)+fil(=foul)]
  n. 小路；峡道（从山上开出来的路，远远看去就像一条线似的）
  vt. 弄脏；亵渎
  defilement n.弄脏
  The mountain steam was defiled by the town's raw sewage. 该市未经处理的污水污染了山上流下来的溪水。

2. filament
  n.细丝；单纤维；（雄蕊的）花丝；（电灯泡、电子管的）灯丝 *fil(= thread)
  filamentous  adj.丝状的

3. filature
  n.缨丝；缫丝厂 *fil(=thread)

4. file
  n.文件夹；档案；（排队的人、物的）列以锉；存档；捧成纵列行进；提出（申请、抗议等）；提起（诉讼）*fil(=thread)
  file cabinet 文件柜
  file numbef 文档嫡号
  file punch 文件穿孔器
  on file 存档
  in single file 成一列纵队 
  the rank and file  普通士兵；庶民
  file suit for a divorce 提起离婚诉讼

5. filings
  n.锉屑 *fil(=thread)

6. fillet
  n.（用做装饰的）带子；（去掉骨头的）肉片，鱼片以把（鱼、肉）切成片 fil(= thread)
  filleted plaice  切成片的镰鱼

7. profile
  n. 人物简介；侧影，侧面；轮廓 v. 画出…的轮廓；勾画侧面图；写人物简介 *pro(=before),fil(=thread)
  portrait drawn in profile 侧影肖像
  line of hills profiled against the night sky 以夜空为背景的山的轮廓

8. filth
  n.污物，肮脏；淫猥 *fil(= foul)

9. filthy
  adj.肮脏的；淫猥的 *fil(= foul)
  filthy lucre  肮脏的钱财

10. filiform确良[fil 线，-i- 中缀，form 形状]
  adj. 丝状的；花丝的；如丝的

11. unifilar [uni 单一，fil 线，后缀-ar ...的]
  adj.单线的

词根词缀：copro-, copr-, kopro-, kopr-

【来源及含义】Greek: feces, dung, excrement; filth, dirt

【同源单词】acoprosis, acoprous, autocoprophage, copracrasia, copragogue, copremesis

词根词缀：lut-

【来源及含义】Latin: mud; clay; dirt; filth; mire

【相关词根词缀】 Cross references of word families related directly, or indirectly, to: "land, ground, fields, soil, dirt, mud, clay, earth (world)": agra-; agrest-; agri-; agro-; argill-; choro-; chthon-; epeiro-; geo-; glob-; myso-; pedo-; pel-; rhyp-; soil-; sord-; terr-.

【同源单词】enlute, Latin lut- forms, lutaceous, lutarious, lute, luteous

词根词缀：myso-, mys-

【来源及含义】Greek: uncleanness of body or mind; filth; defilement; anything disgusting

【相关词根词缀】 Cross references of word families related directly, or indirectly, to: "land, ground, fields, soil, dirt, mud, clay, earth (world)": agra-; agrest-; agri-; agro-; argill-; choro-; chthon-; epeiro-; geo-; glob-; lut-; pedo-; pel-; rhyp-; soil-; sord-; terr-.

【同源单词】automysophobia, mysophilia, mysophilic, mysophobia, mysophobiac, mysophobic

词根词缀：rhyp-, rhypo-; rup-, rupo-

【来源及含义】Greek: filth; dirt

【相关词根词缀】 Cross references of word families related directly, or indirectly, to: "land, ground, fields, soil, dirt, mud, clay, earth (world)": agra-; agrest-; agri-; agro-; argill-; choro-; chthon-; epeiro-; geo-; glob-; lut-; myso-; pedo-; pel-; soil-; sord-; terr-.

【同源单词】rhyparia, rhyparography, rhyparos, rhypasma, rhypax, rhypophagous

词根词缀：sord-

【来源及含义】Latin: sordidus, dirty, foul, filthy, squalid; dirt, filth; related to sordes, "dirt"

【相关词根词缀】 Cross references of word families related directly, or indirectly, to: "land, ground, fields, soil, dirt, mud, clay, earth (world)": agra-; agrest-; agri-; agro-; argill-; choro-; chthon-; epeiro-; geo-; glob-; lut-; myso-; pedo-; pel-; rhyp-; soil-; terr-.

【同源单词】sordes, sordes gastricae, sordid, sordidly, sordidness