1. Expansion
2. Augmentation
3. Increase
4. Addition
5. Broadening
6. Extension
7. Extension
8. Stretch
9. Widening
10. Magnification
11. Prolongation
12. Amplification
13. Extension
14. Increase
15. Extension
16. Expansion
17. Augmentation
18. Widening
19. Extension
20. Amplification
21. Prolongation
22. Expansion
23. Development
24. Extension
25. Enlargement
26. Extension
27. Magnification
28. Widening
29. Extension
30. Extension

Are you looking for the best ideas for synonyms for the word “extension”? Synonyms for “extension” can be used to describe the act of making something larger, longer, or more extensive. Some of the most popular synonyms for “extension” include expansion, augmentation, increase, addition, broadening, stretch, widening, magnification, prolongation, and amplification. These words can be used to describe the act of extending something, such as a deadline or a period of time. Additionally, other words for “extension” include development, enlargement, and increase. All of these words can be used to describe the act of extending something in a variety of contexts. No matter what type of context you are using “extension” in, these synonyms can help you find the best words to accurately describe the situation.