Complete
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6 8 10 13 16 19 21 7 1 18 17 2 9 15 14 3 12 20 11 4 5
  1. 1 a (In biology) series of changes in form that an organism undergoes (4,5)
  2. 8 a Indian or Arctic? (5)
  3. 9 a Admit (7)
  4. 10 a Traitorous collaborator (8)
  5. 11 a Partially carbonised vegetable matter saturated with water (4)
  6. 13 a Second book of the Old Testament (6)
  7. 14 a Pope's ambassador (6)
  8. 16 a Grisly (4)
  9. 17 a Paint with slight sheen (8)
  10. 19 a Persuaded to join (5,2)
  11. 20 a Spy (5)
  12. 21 a Harvard, Yale and six other private universities (3,6)
  13. 1 d A floor covering (8)
  14. 2 d Fertile (6)
  15. 3 d Pious platitudes — jargon (4)
  16. 4 d Trying too obviously to seem intelligent (6-6)
  17. 5 d Coat thinly with a metal — let percolate (anag) (12)
  18. 6 d Herbs in a small bag used in cooking (7,5)
  19. 7 d Dictionary compilation (12)
  20. 12 d Parasol (8)
  21. 15 d Christmas drink (6)
  22. 18 d Fringe (4)

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