1. Theirs
2. Possession
3. Ownership
4. Proprietary
5. Belonging
6. Appropriation
7. Authorization
8. Custody
9. Dominion
10. Jurisdiction
11. Prerogative
12. Sovereignty
13. Tenure
14. Title
15. Appropriate
16. Assign
17. Attribute
18. Award
19. Command
20. Commit
21. Delegate
22. Entrust
23. Grant
24. Impute
25. Prescribe
26. Proffer
27. Reserve
28. Specify
29. Bestow
30. Allocate

Are you looking for the best ideas for synonyms for the word «THEIR»? There are plenty of other words and phrases that can be used to convey the same meaning. From «possession» and «ownership» to «authorization» and «custody», there are a variety of synonyms that can be used to replace «their». Whether you are writing an essay or a blog post, these synonyms can help you express yourself in a more creative way. Additionally, you can also use phrases such as «assign», «attribute», and «award» to further emphasize the meaning of the word. With a wide range of synonyms available, you can easily find the perfect one to fit your needs.