Select the most appropriate ANTONYM of the given word.

Assiduous

Idle

The most appropriate antonym of the word assiduous is idle.

• Assiduous means "showing great care, attention, and effort."
• Idle means "not active or occupied; lazy."

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

• Anxious means "worried or troubled."
• Destitute means "having no money or possessions."
• Unique means "being the only one of its kind; without a like or equal."