having a great effect on people or things; of great value. an important issue/question/point/factor; We have an important decision to make.

having a great effect on people or things; of great value; an important decision/factor; I have an important announcement to make.

[uncountable] the quality of being important see also self-importance Extra Examples Don't underestimate the importance of good presentation.

There are eight meanings listed in OED's entry for the word important, one of which is labelled obsolete. See 'Meaning & use' for definitions, usage, ...

Posture is all-important when you are sitting at a desk. Lack of parking space is affecting the town's all-important tourist industry.

extremely important. Posture is all-important when you are sitting at a desk. Lack of parking space is affecting the town's all-important tourist industry.

IMPORTANT definition: 1. necessary or of great value: 2. having great effect or influence: 3. necessary or of great…. Learn more.

There are nine meanings listed in OED's entry for the noun importance, four of which are labelled obsolete. See 'Meaning & use' for definitions, usage, ...

essential extremely important and completely necessary, because without it something cannot exist, be made or be successful: Experience is essential for this ...

significant · ​. large or important enough to have an effect or to be noticed. There are no significant differences between the two groups of students. · ​.