1. Augment
2. Intensify
3. Magnify
4. Increase
5. Elevate
6. Boost
7. Step up
8. Amplify
9. Rise
10. Height
11. Uplift
12. Advance
13. Enlarge
14. Enhance
15. Expand
16. Deepen
17. Promote
18. Accentuate
19. Strengthen
20. Progress
21. Develop
22. Upgrade
23. Inflate
24. Exaggerate
25. Accrue
26. Emerge
27. Deepen
28. Boost
29. Upscale
30. Prolong

When looking for synonyms for the word “heighten”, it is important to find the best ideas to communicate the same idea. The best way to do this is to look for words that have similar meanings and are related to the concept of heightening. There are many words that can be used in place of “heighten” such as augment, intensify, magnify, increase, elevate, boost, step up, amplify, rise, height, uplift, advance, enlarge, enhance, expand, deepen, promote, accentuate, strengthen, progress, develop, upgrade, inflate, exaggerate, accrue, emerge, deepen, boost, upscale, and prolong. All of these words can be used to effectively communicate the same idea as “heighten”. Using synonyms is a great way to ensure that your writing is varied and more interesting to read.