1. Unite
2. Blend
3. Associate
4. Link
5. Connect
6. Merge
7. Integrate
8. Affiliate
9. Join together
10. Unify
11. Coalesce
12. Marry
13. Colligate
14. Combine
15. Adjoin
16. Annex
17. Attach
18. Fasten
19. Interlock
20. Intertwine
21. Interweave
22. Wed
23. Join forces
24. Syndicate
25. Pool
26. Associate with
27. Collaborate
28. Team up
29. League
30. Align

When looking for other words to describe the concept of joining, it is important to consider the context in which the term is being used. Depending on the situation, certain synonyms may be better suited than others. For example, if two companies are merging, then terms such as “combine”, “merge”, and “syndicate” may be more appropriate than “link” or “connect”. Similarly, when two individuals are joining forces, words such as “team up”, “league”, and “align” may be more suitable than “unite” or “blend”. The best ideas for synonyms for the word “join” depend on the specific context in which they are being used.