Select the most appropriate antonym of the given word. Fertile

The most appropriate antonym of the word fertile is barren.

• Fertile means "able to produce abundantly; productive."
• Barren means "not producing or capable of producing; unproductive."

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

• Civilized means "having a high level of culture and development."
• Sane means "of sound mind; mentally healthy."
• Tough means "able to withstand hardship or difficulty; strong."