Select the most appropriate synonym of the given word.

Juvenile

Childish

The most appropriate synonym of the given word is childish.

• Juvenile means "young and immature."
• Insane means "of unsound mind; mentally ill."
• Mature means "having reached full development or growth."
• Childish means "showing a lack of maturity or judgment."
• Wise means "having or showing good judgment and understanding."