1. Wane
2. Subside
3. Diminish
4. Decline
5. Decrease
6. Retreat
7. Fade
8. Descend
9. Weaken
10. Lessen
11. Erode
12. Retrogress
13. Recede
14. Abate
15. Deteriorate
16. Wither
17. Sink
18. Evanesce
19. Wane
20. Flag
21. Subside
22. Fizzle
23. Abbreviate
24. Wilt
25. Slacken
26. Taper
27. Dwindle
28. Fade
29. Diminish
30. Vanish

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