词根：van(vain), vac, void = empty
来自拉丁语的van 意为empty，它的变形为vain。同义词根有来自拉丁语的vac,void和来自盎格鲁-撒克逊语的wan。
（*拉丁文vacuus (=empty,void) ,vanus(=empty) —— 英文字根字典）
同源词：
1. evanescent（完全空着的e<ex(=out,intensive) + van( = empty) + esc(=becoming)）
adj.逐渐消失的；短暂的
evanescence n.逐渐消失；短暂性
She's a shy girl with an evanescent presence. You'll hardly notice her. 她是个不惹人注意的羞涩的女孩。你几乎都察觉不到她的存在。
2. vanish
v.消失；绝迹；突然不见
vanish into thin air 不知去向；消失得无影无踪
vanishing cream 雪花膏
3. vanity
n.自负，自满；虚荣（心）；无价值；空虚，无意义
tickle her vanity 满足她的虚荣心
injured vanity 受伤害的虚荣心
4. vain
adj.无益的，无用的，徒劳的；自负的，自大的 *vain<van(=empty)
vainly adv.徒劳地，无用地；自满地，自负地
in vain 无益地，徒劳地；轻慢地，不尊敬地
5. vainglory
n.自满，自负；虚荣 *vain<van(=empty)
vainglorous adj.自大的，自满的；虚荣的
6. vacant
adj.空的；空缺的；闲暇的
7. vacancy
n.空职；空虚；空闲
8. vacate
v.使出缺；撤离（使空虚）
9. vacation
n.休闲；空出 v.度假
10. vacationist
n.休假者；度假的人
11. vacuum
n.真空；空间
12. evacuate
v.撤退；疏散；排泄（使空虚）《e- = ex- = out》
evacuation n.撤退；排泄
13. void
adj.无效的；空的；缺乏的
n.空虚；空处
v.使无效；排泄
voidance n.放弃；无效；排泄
14. avoid
v. 避免（出去外面而使空虚）《a- = ex- = out》
avoidance n.回避；取消
15. devoid
n.缺乏的（拿走而变为空虚）《de- = dis- =apart》
16. inevitable
adj.不可避免的《in- = not;e- = ex- = out》
词根：scend, scent, scens, scan = to climb
来自拉丁语的scend意为to climb。变形有scent,scens,scan等。另外，来自拉丁语的scal有ladder的意思。含义相似。
同源词：
1. transcend （越过某物爬tran<trans (=over,beyond) + scend (=climb)）
vt.超越（人类的经验、理性、信仰、描述能力等的范围）；优于
transcendent adj.出众的，卓越的 transcendental 先验的；越自然的；晦涩的
transcendence/transcendency n. 卓越，超越
You can transcend your shyness by doing these exercises daily.你每天做这些练习可以克服羞涩。
2. condescend （和别人一样爬下来con<com(=together) + de(=down) + scend(=climb)）
vi.to + sb/do 屈尊；带着优越感表示亲切
That instructor condescends to his students by treating them like babies.那个教练不摆架子，像对待孩子似的亲切地对待他的学生。
3. ascend
v.攀登（山）；登上；上升 *a <ad(=to,toward)
The path ascends here. 路从这里开始就是上坡了。 ascend the throne 登基
4. ascendancy
n.权势；优势 *a < ad(=to ,toward)
ascendency (=ascendancy)
have the ascandancy over his rivals 比他的对手更有优势
5. ascendant
adj.上升的；优势的 *a < ad(=to ,toward)
ascendent(=ascendant)
in the ascendant 占优势的
6. ascension
n. 攀登；上升*a < ad(=to ,toward),scens<scend(=climb)
the Ascension [基督教]耶酥升天节
7. ascent
n.上升；上坡路；登高；提高 *a < ad(=to ,toward),scens<scend(=climb)
ascent of the mountain 登山 last part of ascent 坡路的尽头
8. descend
v. 下来，下降；（财产等）一代一代传下来；为...的后裔 (be descended from sb.);袭击，出其不意地访问(~on/upon);降低身份做...(~to) *de(=down)
descend the stairs 走下楼梯
descend upon the defenseless village 突袭毫无防备的村庄
9. descendant
n.孙子，后裔 *de(=down)
the descendants of Queen Victoria 维多利亚女王的后裔
10. descent
n.下降，下来；血统；（财产等）P继承，世袭；遗传；袭击；出其不意的拜访 *de(=down),scens<scend(=climb)
the descent of the mountain 下山
of French descent 有法国血统的
Darwin's Descent of Man 达尔文的《人类的由来》
The Danes made numerous descents upon the English coast during the 110th century. 10世纪的时候，丹麦人多次袭击过英国海岸。
11. scan
v.细看，审视；浏览（报纸等）；扫描，用雷达监测（特定区域）；标出韵律；符合韵律 *scan<scend(=climb)
scansion n.（诗歌的）韵律节奏分析；按韵律诵读
scan the hourizon anxiously every mouring 每天早晨不安地望着地平线
scan the newspaper while having his breakfast 吃早饭的时候浏览报纸
词根词缀：adipo-, adip-, adipos-
【来源及含义】Latin: fat, fatty; lard; of or pertaining to fat; fleshy
【相关词根词缀】Other related units of fat words: lard; lipo-; obeso-; oleo-; omento-; pimelo-; pio-; sebo-; steato-.
【同源单词】adipal, adipate, adipectomy, adipescent, adipic, adipis
词根词缀：limno-, limn-
【来源及含义】Greek: lake, marshy lake, pool, marsh
【同源单词】bathylimnetic, epilimnion, hypolimnetic, hypolimnion, limanth, limitrophic
词根词缀：paludi-, palud-
【来源及含义】Latin: marsh, marshes, marshy; malarial
【同源单词】paludal, paludic, Paludicella, paludicoline, paludicolous, paludiferous
词根词缀：pulpo-, pulp-, pulpi-
【来源及含义】Latin: flesh, meat, fleshy parts of the body; fruit pulp; used mostly in reference to the tissue that exists in a tooth
【同源单词】pulp, pulpal, pulpalgia, pulpation, pulpatoon, pulpectomy
词根词缀：uvul-, uvulo-
【来源及含义】Latin: a pendent, fleshy mass of tissue hanging from the soft palate above the root of the tongue; mucous membrane
【相关词根词缀】 Cross references of word families that are derived directly, or indirectly, from: "grape, grapes": acin-; racem-; staphyl-; uveo-.
【同源单词】bifid uvula, uvula