'sh' spelling

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Across
  1. 4. Modification; adjustment (8 letters)
  2. 5. Provides clarity for confusion (11 letters)
  3. 10. Intended to be kept secret (12 letters)
  4. 11. Incomplete; not total (7 letters)
  5. 12. Deformed; not in proper shape (9 letters)
Down
  1. 1. Having high aspirations; driven (9 letters)
  2. 2. Art of enunciating sounds in speech (12 letters)
  3. 3. Culinary expert (4 letters)
  4. 6. Crucial; absolutely necessary (9 letters)
  5. 7. Pertaining to interactions between individuals (6 letters)
  6. 8. Advantageous; producing good results (10 letters)
  7. 9. Lack of wisdom or good sense (11 letters)