1. person who derives pleasure in cruelty.   sadist   ruffian   saboteur   psychiatrist   Hint Half-n-half Clue   2. person specializing in classification (of animals).   reprobate   taxonomist   tightwad   yokel   Half-n-half Clue   3. profligate person.   purveyor   quarry   wastrel   turncoat   Half-n-half Clue   4. hermit or person who lives in isolation.   recluse   teetotaler   tightwad   psychiatrist   Half-n-half Clue   5. person who loves luxury and pleasure.   surrogate   sybarite   ruffian   reaper   Half-n-half Clue   6. person who doubts and questions.   shyster   turncoat   vassal   skeptic   Half-n-half Clue   7. person who peeps in stealthy manner.   voyeur   tycoon   pundit   zealot   Half-n-half Clue