Previous solution

Across: 1. Secular 4. Beamish 8. Owns 9. Broadsides 11. Margin 12. Under-age 14. Reticular 15. Caret 17. Holds 18. Principal 19. Citation 21. Welter 23. Profundity 24. Limb 25. Reserve 26. Twinkle.

Down: 1. Slow march 2. Congratulations 3. Rare 4. Brain drain 5. Aisle

6. Indian rope trick 7. Haste 10. Discus 13. Flapdoodle 15. Cachet 16. Tolerable 19. Caper 20. Truer 22. Stet.