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)
