~ 33 words related to authorities as Noun.

1. government
2. regime
3. polity
4. authority
5. authorization
6. authorisation
7. dominance
8. say-so
9. control
10. person
11. individual
12. someone
13. somebody
14. mortal
15. human
16. soul
17. expert
18. assurance
19. self-assurance
20. confidence
21. self-confidence
22. sureness
23. certainty
24. agency
25. federal agency
26. government agency
27. bureau
28. office
29. administrative unit
30. administrative body
31. sanction
32. permission
33. book