Change the y to an i and add the suffix

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Across
  1. 2. cozy
  2. 5. marry
  3. 6. jumpy
  4. 8. easy
  5. 12. funny
  6. 13. merry
  7. 14. empty
  8. 15. reply
Down
  1. 1. silly
  2. 3. family
  3. 4. worry
  4. 7. penny
  5. 9. carry
  6. 10. vary
  7. 11. apply