Select the most appropriate ANTONYM of the given word.

Lessen

Increase

The most appropriate antonym of the word lessen is increase.

• Lessen means "to make or become smaller or less in amount, degree, or intensity."
• Increase means "to make or become larger or greater in amount, degree, or intensity."

The other words do not have the opposite meaning of lessen.

• Decrease means "to make or become smaller or less in amount, degree, or intensity."
• Minimize means "to make or become as small or unimportant as possible."
• Reduce means "to make or become smaller or less in amount, degree, or intensity."