1. important =crucial (extremely important),significant(amount or effect large enough to be important)

2. common=universal, ubiquitous(if something is ubiquitous, it seems to be everywhere)

3. abundant=ample(enough and usually extra), plentiful(enough for people's needs and wants)

4. stick=adhere, cling(hold on something tightly)

5. neglect=ignore.(difference: neglect means someone has not paid enough attention to something; ignore means no attention.)

6. near=adjacent(twothings next to each other), adjoin(the same as adjacent)

7. pursue=woo(man woos woman, old-fashioned), seek(if you seek sth, you try to obtain it. FORMAL)

8. accurate=precise(precise is exact and accurate in all details), exact(correct in every detail)

9. vague=obscure(unknown or known by only a few people)

10. top=peak, summit

11. competitor=rival, opponent(especially in sports and politics)

12. blame=condemn(if you condemn something, you say it is very bad and unacceptable)

13. opinion=perspective, standpoint(means looking at an event or situation in a particular way)

14. fame=prestige(describe those who are admired), reputation

15. build=erect(you can erect something as buildings, FORMAL), establish

16. insult=humiliate(do something or say something which makes people feel ashamed or stupid)

17. complain=grumble (complain something in a bad-tempered way)

18. primary=radical (very important and great in degree), fundamental

19. relieve=alleviate (alleviate means you make pain or sufferings less intense or severe)

20. force=coerces into(coerce means you make someone do something s/he does not want to),compel

21. enlarge=magnify(magnify means make something larger than it　really is)

22. complex=intricate(if something is intricate, it often has many small parts and details)

23. Lonely=solitary (if someone is solitary, there is no one near him/her)

24. small=minuscule(very small), minute

25. praise=extol(stronger than praise), compliment(polite and political)

26. hard-working=assiduous(someone who is assiduous works hard or does things very thoroughly)

27.difficult=arduous (if something is arduous, it is difficult and tiring, and involves a lot of
efforts)

28.poor(soil)=barren, infertile(used to describe the soil is so poor that plants cannot be planted on it)

29.fragile=brittle, vulnerable(someone who is vulnerable is easily hurt emotionally or physically)

30.show=demonstrate (to demonstrate a fact means tp make it clear to people.)

31.big=massive(large in size, quantity, or extent), colossal(use this word, you emphasize something’s large), tremendous(INFORMAL)

32.avoid=shun(if someone shuns something, s/he deliberately avoid that something or keep away from it.)

33.fair=impartial(someone who is impartial is able to give a fair opinion or decision on something.)

34.attack=assault (physically attack someone), assail (attack violently)

35.dislike=abhor(abhor means you hate something to a extreme extent for moral reasons), loathe(dislike very much)

36.ruin=devastate (it means damage something very badly, or utterly destroy it.)

37.always=invariably(the same as always, but better than always)

38.forever=perpetual(a perpetual state never changes), immutable(something immutable will never change or be changed)

39.surprise=startle(it means surprise you slightly), astound(surprise you to a large degree),astonish(the same as astound)

40.enthusiasm=zeal (a great enthusiasm), fervency (sincere and enthusiasm)

41.quiet=tranquil(calm and peaceful), serene(calm and quiet)

42.expensive=exorbitant(it means too expensive that it should be)

43.luxurious=lavish(impressive and very expensive), sumptuous(grand and very expensive)

44.boring=tedious(if you describe something tedious, you mean it is boring and frustrating)

45.respect=esteem(if you esteem someone, you respect and admire him/her. FORMAL)

46.worry=fret(if you fret about something, you worry about it)

47.cold=chilly(unpleasantly cold), icy(extremely cold)

48.hot=boiling(very hot)

49.dangerous=perilous(very dangerous, hazardous(dangerous, especially to people's safety and health)

50.nowadays=currently