Complete
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7 9 16 17 20 22 1 12 13 2 18 3 10 23 8 11 21 4 14 19 5 15 6
  1. 1 a One who achieved a state of perfect enlightenment, d. c.483 BC (6)
  2. 4 a Spend (time in prison) (5)
  3. 7 a American fraudster who ran the largest Ponzi scheme in history, d. in prison 2021 (6)
  4. 8 a Cook gently in liquid below boiling point (6)
  5. 9 a Burrowing shellfish (4)
  6. 10 a A selection made purely at random (5,3)
  7. 12 a Property specialist — negate taste (anag) (6,5)
  8. 17 a US state (with a creeper?) (8)
  9. 19 a Wish (4)
  10. 20 a Kind of Swiss clock? (6)
  11. 21 a Swoop (on) (6)
  12. 22 a Camping canvas (5)
  13. 23 a Chaste — valets (anag) (6)
  14. 1 d Raised bumps for reading (7)
  15. 2 d Weak and ineffectual person (7)
  16. 3 d Pretentious (informal) (9)
  17. 4 d Superficially impressive (5)
  18. 5 d Islam's month of fasting (7)
  19. 6 d Continent (6)
  20. 11 d Small sour fruit used for making jam and jelly (4,5)
  21. 13 d Muslim who fought against the Crusaders (7)
  22. 14 d Drain (7)
  23. 15 d Distinctive — normal (7)
  24. 16 d Octave (anag) — wading bird (6)
  25. 18 d Golf clubs (5)

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