Yesterday Across:

1. Ambition 7. Rouse 8. Intervene 9. Top 10. Glee 11. Forces 13. Insubstantial 15. System 16. Avid 18. Eat 20. Economise 21. Acrid 22. Idleness.

Down: 1. Aping 2. Bathers 3. Tore 4. One for the road 5. Quits 6. Helpful 7. Rescind 12. Abashed 13. Illegal 14. Invoice 15. Story 17. Dregs 19. Done.