词根：vad, vas(wad) = to go

  来自拉丁语的vad,vas意为to go。变形为wad,同义词根有来自拉丁语的ced/cess(ceed,ceas),grad/gred/gress,it 和算来希腊语的bat(bet,bit)以及来自盎格鲁-撒克逊语的fare。
  （*拉丁文vadere(=to go)——英文字根字典）

同源词：

1. pervade （这儿、那儿，一一走遍per(=through,throughout) + vad(=go)）
  vt.遍及；弥漫于，渗透于
  pervasion n.弥漫，渗透；普及
  pervasive adj.遍及的，普遍深入的；渗透的
  According to conservatives,harmful violence pervades a lot of television programming.保守主义者认为，有害的暴力行为渗透到了很多电视节目中。

2. invade
  v.入侵，侵略；侵害；大批进入 *in(=into)
  invasion n.入侵，侵略
  invader n.侵略者，入侵者
  city invaded by tourists 游客大批涌入的城市

3. vade-mecum
  n.随身携带品；袖珍指南手册 *mecum(=together with me)

4. wade
  n.涉水而过（江、河等） *wad<vad(=go)

5. waddle
  v.蹒跚而来 n.蹒跚，摇摆的步子 wad<vad(=go)

6. evade
  v. 逃避；闪避（逃避在外面）《a- = ex- =out》

词根词缀：com-, co-, cog-, col-, con-, cor-

【来源及含义】Latin: together, together with, with

【相关描述】The prefix com- is assimilated to co- before h, w, and all vowels:

The prefix com- becomes, cog- before g: cognition, [co + gnoscere, "to know"], et al.

The prefix com- becomes, col- before l: colloquial, et al.

The prefix com- becomes, con- before c, d, g, j, n, q, s, t, v: covivant, et al.

The prefix com- becomes, cor- before r: corrigible, et al.

【相关词根词缀】 Related "together" units: greg-; inter-; struct-.

【同源单词】abscond, abscondee, anticorrosive, bioconcentration, coadjutant, coadjuting

词根词缀：syn-, sy-, sym-, syl-, sys-

【来源及含义】Greek: with, together with; also by extension: united; same, similar; at the same time

【相关词根词缀】 Inter-related cross references, directly or indirectly, involving word units dealing with "equal, identical, same, similar": auto-; emul-; equ-, equi-; homeo-; homo-; iso-; pari-; peer; rhomb-; tauto-.

【同源单词】acrocephalopolysyndactyly, acrocephalosyndactylia, acrocephalosyndactyly, acrosyndesis, allosynapsis, antagonistic symbiosis

词根词缀：zygomatico-

【来源及含义】Greek: the malar bone or the arch that the malar bone forms with the other bones to which it is connected

【相关描述】So named because it "yokes" the bones of the face together with those of the skull.

【同源单词】zygomaticofacial, zygomaticofrontal, zygomaticomaxillary, zygomatico-orbital, zygomaticosphenoid, zygomaticotemporal