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 (two things 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 to make it clear to people.)

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

　　32. avoid = shun (if someone shuns something, s/he deliberately avoid that 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)