1. Speculative
2. Suppositional
3. Fanciful
4. Idealistic
5. Theoretical
6. Imaginary
7. Notional
8. Quasi-real
9. Unreal
10. Notional
11. Abstract
12. Vague
13. Assumed
14. Implied
15. Postulated
16. Hypothetic
17. Conjectural
18. Far-fetched
19. Notional
20. Figurative
21. Fictitious
22. Fictive
23. Problematic
24. Problematical
25. Suppositious
26. Supposititious
27. Tentative
28. Theoretic
29. Unproven
30. Unsubstantiated

When discussing topics that are uncertain or based on assumptions, it can be helpful to have a variety of synonyms to use. Having a list of synonyms for the word “hypothetical” can help you express your ideas more precisely. Whether you’re writing a research paper, a blog post, or a story, having a list of other words for “hypothetical” can help you convey your point more effectively. Here is a list of 30 of the best ideas for synonyms for the word “hypothetical”: speculative, suppositional, fanciful, idealistic, theoretical, imaginary, notional, quasi-real, unreal, abstract, vague, assumed, implied, postulated, hypothetic, conjectural, far-fetched, figurative, fictitious, fictive, problematic, problematical, suppositious, supposititious, tentative, theoretic, unproven, and unsubstantiated. With this list of synonyms, you can easily find the best word to express your ideas.