Previous solution

Across: 7. Exterminating 8. Fearsome 9. Apex 10. Assess 12. Voyage 14. Kia 15. Ashore 17. Loiter 19. Cowl 21. Engaging 23. Cut the mustard.

Down: 1. Expenses 2. Decree 3. Ammo 4. Interval 5. Steady 6. Once 11. Skewered 13. Greenery 16. Of late 18. Ingots 20. Opus 22. Glut.