Expressing an opinion

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Across
  1. 2. To agree or share the same opinion with someone. (6)
  2. 3. To argue against or provide evidence against an accusation or theory. (5)
  3. 5. To put forward a plan or idea for consideration. (7)
  4. 7. To reject an idea or opinion as unworthy of consideration. (7)
  5. 9. To argue against or question the validity of something. (7)
  6. 11. To insist on something, even in the face of opposition. (8)
  7. 13. To support or defend a principle or law. (6)
  8. 14. To accept or admit the existence or truth of something. (11)
  9. 15. To express approval or support for something or someone. (7)
  10. 18. To publicly support or recommend a particular cause. (8)
  11. 19. To confirm or validate something. (6)
Down
  1. 1. To assume something as true without proof. (7)
  2. 2. To argue or state something in a definite way. (7)
  3. 4. To give special importance to something. (9)
  4. 6. To state a fact or belief confidently and forcefully. (6)
  5. 8. To express doubt or challenge the validity of something. (8)
  6. 10. To suggest something indirectly. (5)
  7. 12. To form a theory without firm evidence. (9)
  8. 16. To propose an idea or theory in a cautious manner. (7)
  9. 17. To admit something is true after initially resisting. (7)