Suffix (-ly, -ful, -less)

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Across
  1. 3. having no knowledge, understanding, or ability
  2. 5. absolutely clean or pure
  3. 8. having great strength
  4. 9. in a way that is incorrect
  5. 11. unable to speak
  6. 13. full of significance, value, or purpose
  7. 14. feeling or inspiring optimism about a future event
  8. 15. with happiness, pleasure, or delight
Down
  1. 1. without making any sound
  2. 2. using or expending something of value carelessly
  3. 4. immediately or at once
  4. 6. too many to be counted; very many
  5. 7. in a way that shows courage
  6. 10. highly pleasing
  7. 12. not causing or suffering physical pain