Select the most appropriate antonym of the word.

CURTAIL

Enlarge

The most appropriate antonym of the word curtail is enlarge.

• Curtail means "to reduce in extent or quantity."
• Enlarge means "to make or become larger."

The other words do not have the same meaning as curtail, so they are not its antonyms.

• Reduce and decrease mean to make something smaller, but they do not have the same implication of cutting that curtail does.
• Lessen means to make something smaller or less intense, but it does not have the same implication of reducing something to its essential parts that curtail does.