1. Essential
2. Crucial
3. Necessary
4. Significant
5. Pivotal
6. Valuable
7. Prime
8. Paramount
9. Preeminent
10. Vital
11. Relevant
12. Chief
13. Central
14. Primary
15. Notable
16. Momentous
17. Substantial
18. Eminent
19. Cardinal
20. Prevalent
21. Weighty
22. Grand
23. Grave
24. Influential
25. Decisive
26. Predominant
27. Overriding
28. Supreme
29. Noteworthy
30. Outstanding

Finding the right words to express your thoughts and ideas can be a challenge. It is important to know the various synonyms for important, as they can help you to vary your language and make your writing more interesting. If you are looking for other words for important, some of the best ideas include essential, crucial, necessary, significant, pivotal, valuable, prime, paramount, preeminent, vital, relevant, chief, central, primary, notable, momentous, substantial, eminent, cardinal, prevalent, weighty, grand, grave, influential, decisive, predominant, overriding, supreme, noteworthy and outstanding. These synonyms can be used in a variety of contexts and can help to add depth and nuance to your writing.