what are they like?

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Across
  1. 4. not nice, not polite
  2. 6. full of energy
  3. 7. talkative,loves people
Down
  1. 1. nervous and quiet person
  2. 2. prefers not to talk
  3. 3. other word for smart
  4. 4. loud person
  5. 5. loves sports,athletic