Choose the most appropriate ANTONYM of the given word.

Turbulent

Calm

The most appropriate antonym of the word turbulent is calm.

• Turbulent means "(of a situation or state of affairs) characterized by violent disturbance or disorder."
• Calm means "(of a person or their manner) not showing or feeling any disturbance or excitement."

The other words do not have the same meaning as "turbulent" and are therefore not antonyms.

• Successful means "having achieved the desired or intended outcome."
• Defeat means "the loss of a battle or contest."
• Tumultuous means "(of a crowd or gathering) noisy and disorderly."