Crucial, basic, big time, consequential, and critical are all synonyms for important. Unimportant, inessential, and irrelevant are these antonyms of important. And here are another 95 synonyms for important.
Important Synonyms
1. principal
- Basic
- Beneficial
- Cardinal
- Central
- Chief
- Critical
- Crucial
- Dominant
- Essential
- Foremost
- Fundamental
- Indispensable
- Key
- Main
- Major
- Material
- Necessary
- Number-one
- Of concern
- Of interest
- Of the essence
- Of use
- Of value
- Overriding
- Paramount
- Pertinent
- Predominant
- Prime
- Principal
- Relevant
- Salient
- Significant
- Supreme
- Urgent
- Useful
- Valuable
- Valued
- Vital
- Germane
2. powerful
- Big time
- Big
- Celebrated
- Controlling
- Distinguished
- Dominant
- Eminent
- Esteemed
- Famous
- Foremost
- Formidable
- Grand
- Great
- High-level
- High-ranking
- Influential
- Leading
- Major league
- Notable
- Noteworthy
- Of influence
- Of note
- Outstanding
- Powerful
- Pre-eminent
- Prestigious
- Prominent
- Respected
- Top-level
- Well connected
- Big league
3. significant
- Consequential
- Critical
- Crucial
- Decisive
- Epoch-making
- Far-reaching
- Grave
- Historic
- Major
- Momentous
- Of great consequence
- Of great import
- Of great moment
- Of import
- Pivotal
- Seminal
- Serious
- Signal
- Significant
- Substantial
- Urgent
- Vital
- Weighty
- Material