1. abate 2. decline 3. decrease 4. depopulate (о населении) 5. diminish 6. drop off 7. dwindle 8. fine away, fine off 9. flag 10. languish 11. lessen 12. lower 13. melt 14. narrow 15. peter out (о запасах) 16. slip 17. take off 18. wane 19. wither 20. fall away 21. fall off 22. sink