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. 5 a Ruthlessly competitive (3-3-3)
  2. 8 a Vitality (informal) (4)
  3. 9 a Small low house (8)
  4. 10 a Ta-ra! (informal) (2,4)
  5. 11 a Like egg yolk (6)
  6. 13 a Bagged (anag) — complete rotter! (3,3)
  7. 15 a Hard to bear (6)
  8. 16 a Nutty (informal) (8)
  9. 18 a Mislay (4)
  10. 19 a With the order reversed (4,5)
  11. 1 d Small tropical animal that eats snakes, rats and birds' eggs (8)
  12. 2 d Leaves holder (3,3)
  13. 3 d Sharply painful (6)
  14. 4 d Goya (anag) (4)
  15. 6 d Extinct terrestrial reptiles (9)
  16. 7 d Spaghetti dish (9)
  17. 12 d Protestant opposed to Northern Ireland ever joining a united Ireland (8)
  18. 14 d North American name for a ground squirrel — a resident of Minnesota (6)
  19. 15 d Giggle (6)
  20. 17 d Elegance (4)

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