Antonyms are words opposite in meaning

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Across
  1. 1. stale
  2. 5. wrong
  3. 6. enemy
  4. 9. innocent
  5. 10. cheap
  6. 12. easy
Down
  1. 2. exit
  2. 3. boring
  3. 4. dull
  4. 6. wise
  5. 7. quiet
  6. 8. hide
  7. 11. small