4 verses have
weak
in Edition Clear Qur'an by Talal Itani / An-Nisaa (The Women)

4:9Those who are concerned about the fate of their weak children, in case they leave them behind, should fear God, and speak appropriate words.

4:28God intends to lighten your burden, for the human being was created weak.

4:76Those who believe fight in the cause of God, while those who disbelieve fight in the cause of Evil. So fight the allies of the Devil. Surely the strategy of the Devil is weak.

4:98Except for the weak among men, and women, and children who have no means to act, and no means to find a way out.