Spelling words

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Across
  1. 3. To find the size, amount, or degree of something (7 letters)
  2. 5. Relaxed and unhurried (9 letters)
  3. 9. The force exerted on an object (8 letters)
  4. 12. The act of closing something (7 letters)
  5. 13. To promise or confirm (6 letters)
  6. 14. An action taken to counteract a danger or threat (15 letters)
  7. 16. Excessive exposure, especially to sunlight (13 letters)
  8. 17. To protect against loss or damage (6 letters)
Down
  1. 1. Not certain or doubtful (6 letters)
  2. 2. To make someone feel less worried or anxious (8 letters)
  3. 4. A feeling of annoyance or dissatisfaction (11 letters)
  4. 6. Calmness or self-control (9 letters)
  5. 7. A long, narrow opening or line of breakage (7 letters)
  6. 8. The action of making new or secret information known (10 letters)
  7. 10. Something that surrounds or closes off an area (9 letters)
  8. 11. To criticize or express disapproval formally (7 letters)
  9. 15. To make certain or guarantee (6 letters)
  10. 18. Certain or positive (4 letters)