1. important =crucial (extremelyimportant),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.opinon=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.)
　　 39.always=invariably(the same as always, but better than always)
　　 40.forever=perpetual(a perpetual state never changes), immutable(something immutable will never change or be changed)
　　 41.surprise=startle(it means surprise you slightly), astound(surprise you to a large degree),astonish(the same as astound)
　　 42.enthusiasm=zeal (a great enthusiasm), fervency (sincere and enthusiasm)
　　 43.quiet=tranquil(calm and peaceful), serene(calm and quiet)!
　　 44.expensive=exorbitant(it means too expensive that it should be)
　　 45.luxurious=lavish(impressive and very expensive), sumptuous(grand and very expensive
　　 46.boring=tedious(if you describe something tedious, you mean it is boring and frustrating)
　　 47.respect=esteem(if you esteem someone, you respect and admire him/her. FORMAL)
　　 48.worry=fret(if you fret about something, you worry about it)
　　 49.cold=chilly(unpleasantly cold), icy(extremely cold)
　　 50.hot=boiling(very hot)