abnegate      vt. 放弃，舍弃，禁忌

SURRENDER, RELINQUISH      

abnegate <> reaffirm

abolitionism  n. 废除主义,废奴主义

principles or measures fostering abolition especially of slavery  

anarchist : government :: abolitionist : slavery

abolitionist <>persiste in slavery

arboretum     n. 树园,植物园

a place where trees, shrubs, and herbaceous plants are cultivated for scientific and educational purposes

arboretum:wilderness::??

aboveboard    a. 光明正大的,率直的

in a straightforward manner    

surreptitious <> barefaced / aboveboard

abrasion      n. 表面磨损(v. abrade)  

a wearing, grinding, or rubbing away by friction

abraded : friction :: desiccated : dehydration   

scuff : abrasion :: heat : vaporization   

abrade <> augment

abridge       vt. 删节,缩短,剥夺 

to shorten by omission of words without sacrifice of sense : CONDENSE

abbreviate: sentence:: abridgment : essay

abrogate      v. 废止，废除?  

to abolish by authoritative action : ANNUL      

abrogate <> embrace / institute / uphold

abscond       v. 潜逃，逃亡?  

to depart secretly and hide oneself   

abscond : depart :: pilfer:take  

follow : shadow :: leave : abscond    

lurk:wait::purloin:appropriate/abscond:depart

absolve       vt.赦免；解除(责任等)   

to set free from an obligation or the consequences of guilt

exculpatory : absolve : :: motivational : stir    

hortative : encourage :: exculpatory : absolve  

absolve <>inculpate

abstain       vi. 自制,戒绝,弃权,避免

to refrain deliberately and often with an effort of self-denial from an action or practice  

mandatory : comply :: forbidden : abstain    

abstemious    adj. 有节制的，节俭的   

marked by restraint especially in the consumption of food or alcohol 

abstemious : indulge :: austere : decorate   { intransigence:control}  

reticent : talk :: abstemious : gorge

abstract      a. 抽象的，不具体的；n. 摘要，提要

having only intrinsic form with little or no attempt at pictorial representation or narrative content   

abstract <> elaborate

abstruse      adj.深奥的

difficult to comprehend : RECONDITE      

abstruse <> accessible / patent

abuse         n./v. 辱骂，滥用? 

to attack in words : REVILE

diatribe : abuse :: burlesque : mockery    

polemic : disputatious :: invective : abusive   

accede        v.同意

to express approval or give consent : give in to a request or demand