Like A Mule

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Across
  1. 2. Another synonym of recalcitrant.
  2. 4. Hard to manage.
  3. 8. Determined.
  4. 10. Obstinate and unyielding both mean stubborn and __________.
  5. 11. Firmness or determination.
  6. 12. Part of speech of resolve.
Down
  1. 1. Unwilling to bend.
  2. 3. "Dogged" is an adjective, unlike "dogged," which is a ____.
  3. 5. Stubborn and disobedient.
  4. 6. All of these words are __________ except one.
  5. 7. Strongly opinionated and narrow-mindedly stubborn.
  6. 9. An animal known for being stubborn.