aggravate     vt. 使恶化,使更严重加重 

to make worse, more serious, or more severe : intensify unpleasantly     

succor <> aggravate

ameliorate <>aggravate

aggregate     vt.vi. 聚集,集合,合计  

to collect or gather into a mass or whole    

coalesce <> disaggregate  

disaffected <> content

aggrieve      vt. 使委屈,使苦恼,侵害  

to give pain or trouble to : DISTRESS 

aggrieve <>gratify  

agony         n. 极大的痛苦

intense pain of mind or body : ANGUISH, TORTURE 

agonized : distress :: obsessed : concern   

painful : agonizing :: important : paramount 

airtight      a. 密闭的,不透气的,无懈可击的     

airtight: loophole::

alacrity      n. 敏捷,轻快,乐意

promptness in response : cheerful readiness  

husbandry : dissipate :: alacrity : procrastinate   

alacrity <> dilatoriness / hesitance

albino        n. 白公,白化病者,白化变种  (or albinism) 

an organism exhibiting deficient pigmentation

albino : pigment :: prairie : tree  

alibi         n.托辞，借口，辩解 

an excuse usually intended to avert blame or punishment    

alibi:exculpatory::warning:admonishery

alibi : excuse ::

align         v.定位，对齐，排成一行，结盟   

to bring into line or alignment   

aligned <> askew

awry <>orderly/aligned

allay         v. ①平息(愤怒等) ②缩小

to subdue or reduce in intensity or severity : ALLEVIATE      

allay <> increase the intensity of

adversary <>ally

allegiance    n．忠诚，拥护

devotion or loyalty to a person, group, or cause

authoritativeness:pundits ::allegiance:partisans

allegory      n. 寓意；寓言

the expression by means of symbolic fictional figures and actions of truths or generalizations about human existence  allegory : fiction  

alleviate     v．缓和，减轻 RELIEVE, LESSEN  

abate : tax :: alleviate : distress   

alleviate <> exacerbate

alliterate    v. 押头韵 

the repetition of usually initial consonant sounds in two or more neighboring words or syllables 

alliterate : remove :: blazon : efface   

allude        vi. 暗示,提及

to make indirect reference;  broadly   : REFER

allude <>mention explicitly