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15. Which two words are most opposite in meaning?
  1) TALKATIVE
2) GOSSIPY
3) VIRTUOUS
4) POOR
5) NONCHALANT
6) GUTLESS
7) CALM
8) NEFARIOUS
9) FASTIDIOUS
10) TOPLOFTY
 

Explanation:
3 and 8 (VIRTUOUS, NEFARIOUS).