important is an adjective that describes something that has great significance in terms of consequence, relevance, or influence. It is usually used to emphasize the importance of something, or to emphasize that something is very necessary.
rules and use cases for using important as an adjective include using it to describe people, events, documents, or anything that is relevant or of great consequence.
The important thing to remember is to stay focused.
It's important to seek advice when making important decisions.
The Prime Minister made an important statement today.
Remember to emphasize the importance of something by using important as an adjective before the noun it's modifying. Make sure to use the singular form as opposed to the plural form when referring to something as important.