Essential: meaning, definitions and examples

Used to describe something that is absolutely necessary or extremely important for a particular purpose.

• Water is essential for human survival.
• Good communication is essential in a team.

Used to emphasize the importance of something in determining the outcome of a situation. It stresses the significance and decisive impact of an element or decision.

• His role is crucial to the success of the project.
• It's crucial that we follow all safety procedures.

Used to describe something that is absolutely indispensable or essential to life or success, emphasizing its critical importance.

• Proper nutrition is vital for good health.
• It is vital to address these issues immediately.

Implies that something must be done or is needed; it sometimes suggests that without it, a particular outcome cannot occur. It can be less intense than 'essential'.

• It is necessary to complete the application form.
• Warm clothes are necessary for the trip.

Often used when talking about matters that are crucial and must be addressed urgently, can also imply a situation or decision that is very important.

• It's critical to finish the project by the deadline.
• Maintaining a critical level of stock is necessary for business operations.

Use this word when talking about something that is absolutely necessary or very important.

• Water is essential for life.
• It is essential that you follow the instructions carefully.

Use this when referring to a basic or fundamental part of something bigger, which can be abstract or physical.

• Trust is a key element in a successful relationship.
• Hydrogen is an element found in many compounds.

This word is useful for talking about parts of a larger system or machine that work together.

• The engine is a crucial component of a car.
• Each component of the software must be tested separately.

This term is best for specifying conditions or qualifications that must be met.

• A degree is a requirement for this job.
• Meeting safety requirements is mandatory.