aseptic a.无菌的 [anti-sept-ic抗菌药]

ashen a.灰色的

asinine a.愚鲁的 [asin= asinus驴子ASS+ine]

askance ad.斜视地

askew ad.斜地 [A+SKEW歪曲,歪斜,弯曲]

aslope a.ad.成斜坡;倾斜

asp n.毒蛇;埃及产眼镜蛇 [ME

aspen n.白杨;白杨似的;摇晃的 [earlier name asp + -EN forming adj. taken as noun asp毒蛇]

asperity n.粗暴;艰苦 [ME

asperse v.诽谤 [(AD-, spargere sprinkle)aspersion中伤;(天主教)洒水]

aspirant n.热望者 [F aspirant or

aspiration n.抱负 [ME

aspire v.热望,怀大志,切望 [ME

asquint a.ad.斜视;斜的 [ME perh.

assail v.攻击 [AD-, salire salt- leap]

assassin n.刺客 [F assassin or

assault n.突然袭击;猛袭 [as+sault=sail]

assay v.分析;试验 [ME

assemble v.聚集 [

assent v.同意;赞成 [ME

assert v.断言;主张 [assertive 言语果敢的;断言的 assertion 主张;断言,确言]

assess v.估定;定...额;评价;估价 [~ a tax at 10 pounds; ~ a statement at its true worth]

asset n.财产;可取之处 [as-set]

asseverate v.断言 [L asseverare(AD-, severus serious)]

assiduous a.勤勉的 [L assiduus(SESS)assidulity勤勉,励精]

assimilate v.吸收 [ME

assize n.裁判;法定价格 [ME

assonance n.类音;类韵;母韵 [AD-, sonus sound]

assort v.分类;配齐;相交 [OF assorter

assuage v.平息;减轻 [ME

assumption n.担任;假设 [ME

assure v.确告 [assured自信的assurance自信;保证 reassure使安心]

astir a.ad.骚动;活动;兴奋 [A + STIR n.骚动；传播；流行]

astound v.使...大吃一惊,惊愕 [obs. astound (adj.) = astoned pp. of obs. astone: ASTONISH]

astral a.星的;多星的 [LL astralis

astray a.迷路的;误入歧途的 [a+STRAY走离]

Unit 4

astringent a.收敛性的;止血的 [stringent 严格的;严厉的]

astrolabe n.星盘

astrology n.占星学 [ASTRO-, -LOGY]

astute a.机敏的;狡猾的 [obs F astut or L astutus

asunder ad.散开;碎散;分别 [OE on sundran into pieces: cf SUNDER分为二,分开,切开]