Carry is the opposite of Borrow. Borrow is the opposite of Return. Return is the opposite of Leave. Leave is a synonym of Allow. 
Powerful is related to Energy. Person wants (to) Energy. Person wants (to) Courage. 
Carry <--Antonym--> Borrow <--Antonym--> Return <--Antonym--> Leave <--Synonym--> Allow 
Powerful <--RelatedTo--> Energy <--Desires-- Person --Desires--> Courage 