Select the most appropriate antonym of the given word.

Cautious

Negligent

The most appropriate antonym of the word cautious is OPTION 2- negligent.

• Cautious means "showing care or thought for avoiding danger or risk."
• Negligent means "failing to take proper care in doing something."

The other words are not its antonyms.

• Discreet means "showing good judgment and careful about what one says or does."
• Prudent means "showing care and thought for the future."
• Alert means "quick to notice or respond to danger or opportunity."