弱 (ruò): อ่อนแอ

He just had surgery and his body is still very weak; he needs more rest.

This laptop's battery is too weak; it runs out of power after just two hours.

His eyes are very weak in bright light, so he always wears sunglasses.

This country's economic foundation is relatively weak and needs more international aid.

She speaks in a very weak voice; I can hardly hear her clearly.