Central

Main

Core

Primary

Fundamental

Crucial

Vital

Essential

1 Antonym: Central

The central location of the new office building made it easily accessible to employees.

The central theme of the novel revolved around the concept of love and loss.

The central character in the play struggled with identity and self-discovery.

The central idea of the presentation resonated with the audience, sparking lively discussion.

2 Antonym: Main

The main goal of the project was to increase efficiency and reduce costs.

The main character in the story faced numerous challenges on their journey.

The main entrance to the building was decorated with intricate carvings and sculptures.

The main reason for the delay was unforeseen logistical issues.

3 Antonym: Core

She focused on strengthening her core muscles through regular exercise.

The company's core values emphasize integrity and innovation.

Understanding the core concepts of a subject is essential for academic success.

The core of the argument lies in addressing the root cause of the problem.

4 Antonym: Primary

The primary purpose of the meeting was to discuss budget allocations.

Learning to read is a primary skill for young children.

In biology, the primary function of the heart is to pump blood throughout the body.

The primary reason for her success was her dedication and hard work.