Complete
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8 10 13 16 6 5 19 1 17 2 9 14 3 11 15 4 12 18 7
  1. 5a Post-nuptial break (9)
  2. 8a Goad (4)
  3. 9a Compromise (5-3)
  4. 10a Dam-building animal (6)
  5. 11a Scuffle (6)
  6. 13a Abrasion (6)
  7. 15a British surface-to-air missile, introduced in 1971 (6)
  8. 16a Abnormal (8)
  9. 18a Horse kept only for hire (4)
  10. 19a Woodwork (9)
  11. 1d Liberia's capital (8)
  12. 2d Neither M nor F (6)
  13. 3d Dots over the vowel in Köln (6)
  14. 4d Predicament — golfer's target (4)
  15. 6d Boxing blows — cuter pups (anag) (9)
  16. 7d Prosperity (9)
  17. 12d Sky-blue colour (8)
  18. 14d Elude (6)
  19. 15d Become less severe (6)
  20. 17d Attain maximum intensity (4)