Prefix and Suffix

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Across
  1. 3. comfortable - suffix
  2. 5. superstar - prefix
  3. 6. fearless - suffix
  4. 8. triangle - prefix
  5. 10. prefix - prefix
Down
  1. 1. submarine - prefix
  2. 2. darkness - suffix
  3. 4. enjoyment - suffix
  4. 7. extraordinary - prefix
  5. 9. attraction - suffix