1. extremely large in size, amount, degree, intensity, or extent

Examples

• The Sahara Desert covers a vast area of North Africa.
• She has vast experience in computer programming.
• The company made vast improvements to their customer service.
• We could see vast fields of wheat stretching to the horizon.
• The museum houses a vast collection of ancient artifacts.
• There is a vast difference between the two proposals.
• The vast majority of students passed the exam.