Making antonyms (opposites) by adding the prefixes ‘ir’ and ‘il’.

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Across
  1. 4. not logical or reasonable
  2. 6. not connected with or relevant to something
  3. 8. not clear enough to be read
Down
  1. 1. too attractive and tempting to be resisted
  2. 2. not showing a proper sense of responsibility
  3. 3. not even or balanced in shape or arrangement
  4. 5. unable to read or write.
  5. 7. against the law, not legal