Wrinkle in time

12345678910111213
Across
  1. 4. Swaggering show of courage
  2. 7. artificial material
  3. 9. something dangerous to post a threat to
  4. 10. slowed down or delayed
  5. 12. feeling sick
  6. 13. uncivilised
Down
  1. 1. persistent determination
  2. 2. not unusual or special
  3. 3. light is not let through
  4. 5. joyful muffled laugh
  5. 6. fake
  6. 7. Clothing to protect clothes underneath
  7. 8. wondering aimlessly to search for pleasure
  8. 11. to be placed on the side of something