Which of the following words is closest in meaning to “Feeble”?

Feeble means weak.

• Correct answer - frail: it has the same meaning as Feeble.
• robust: strong and healthy - wrong, it does not mean the same as Feeble.
• meek: quiet and submissive - wrong, it does not mean the same as Feeble.
• vigorous: strong and energetic - wrong, it does not mean the same as Feeble.