the hint

123456789
Across
  1. 2. something that you read
  2. 4. a way to refer to all members of a certain group
  3. 6. is
  4. 7. the
  5. 8. a secret word used to grant permission
Down
  1. 1. belonging to you
  2. 3. the alphabet wouldn't exist without it
  3. 5. before all others
  4. 9. of