1. Surprise=startle (it means surprise you slightly), astound (surprise you to a large degree), astonish (the same as astound)
2. Enthusiasm=zeal (a great enthusiasm), fervency (sincere and enthusiasm)
3. Quiet=tranquil (calm and peaceful), serene (calm and quiet)!
4. Expensive=exorbitant (it means too expensive that it should be)
5. Luxurious=lavish (impressive and very expensive), sumptuous (grand and very expensive
6. Boring=tedious (if you describe something tedious, you mean it is boring and frustrating)
7. Respect=esteem (if you esteem someone, you respect and admire him/her. FORMAL)
8. Worry=fret (if you fret about something, you worry about it)
9. Cold=chilly (unpleasantly cold), icy (extremely cold)
10. Hot=boiling (very hot)