1. abacus frame with balls for calculating
2. abjure promise or swear to give up
3. abraded rubbed off， worn away by friction
4. abrasion rubbing， scraping， wearing off
5. abrogate repeal or annul by authority
6. abundant plentiful
7. abut border on
8. abysmal bottomless， extreme
9. acclaimed welcomed with shouts and approval
10. accolade praise， approval
11. accretion the growing of separate things into one
12. acquisition smth acquired， acquiring
13. adhere remain faithful， stick fast to
14. adhesion adhering， support
15. adjacent lying near， next
16. admonitory containing warning
17. adulteration making unpure， poorer in quality
18. agile active， quick-moving
19. ail trouble; be ill
20. alacrity eager and cheerful readiness
21. allegiance duty， support， loyalty
22. amalgamate mix， combine， unite societies
23. amendment improving
24. amplify make large or fuller， increase the strength
25. annul put an end to
26. antidote medicine used against a poison or a disease
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