Opposites!

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Across
  1. 2. Closed.
  2. 5. Shorter.
  3. 6. Unpopular.
  4. 8. Outside.
  5. 10. Boring.
Down
  1. 1. Exit.
  2. 3. Smallest.
  3. 4. Far.
  4. 7. Under.
  5. 9. Lose.