你好，以下是2021年九年级下册英语单词：
1. proposal
2. ambitious
3. aspect
4. reputation
5. potential
6. desperate
7. optimistic
8. passionate
9. cooperate
10. significant
11. potential
12. fortunate
13. accurate
14. beneficial
15. confident
16. tolerant
17. efficient
18. independent
19. qualified
20. responsible
21. generous
22. enthusiastic
23. considerate
24. passionate
25. persuasive
26. tolerant
27. decisive
28. sensible
29. determined
30. creative
31. courageous
32. ambitious
33. flexible
34. efficient
35. diligent
36. confident
37. independent
38. persistent
39. considerate
40. innovative
41. enthusiastic
42. cooperative
43. responsible
44. reliable
45. adaptable
46. diligent
47. respectful
48. ambitious
49. optimistic
50. considerate
2021九年级下册英语单词
volunteer, wonderful, convenient, street, concert, direct