1. ability 2. advantage 3. advise 4. advance 5. advantageous 6. adverse 7. adversary 8. advertise 9. advertisement 10. advice 11. advisor 12. advisement 13. advisory 14. advocate 15. advocacy 16. adventurous 17. adventurer 18. adversity 19. adventurousness 20. adverb 21. aggressively 22. aggression 23. aggressive 24. advocate 25. advocacy 26. advocation 27. advisable 28. advisability 29. advisory 30. adverbially 31. advancement 32. advanced 33. advantageously 34. advantage 35. adversely 36. adversity 37. adverbial 38. advert 39. advertiser 40. advertising 41. advertorial 42. advice 43. adviser 44. advisory 45. adulation 46. admire 47. admiration 48. admirable 49. admit 50. admission