Spelling words crossword.

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Across
  1. 1. not mobile
  2. 3. not certain
  3. 4. synonym of argument
  4. 6. not mature
  5. 7. underrate
  6. 11. not likely
  7. 13. not reliable
  8. 16. not mortal
  9. 17. not dependent
  10. 18. not perfect
Down
  1. 1. not cautious
  2. 2. under age group age
  3. 3. not sure
  4. 5. synonym of instant
  5. 8. not convenient
  6. 9. synonym of partner
  7. 10. synonym of below
  8. 12. synonym of incognito
  9. 14. not animate
  10. 15. without ability