Thigh is the opposite of Breast. Breast is a synonym of Summit. Summit is a synonym of Peak. 
Extended is a form of Extend. Extend is a type of Change. Receive is a type of Change. Receive is the opposite of Serve. 
Thigh <--Antonym--> Breast <--Synonym--> Summit <--Synonym--> Peak 
Extended --FormOf--> Extend --IsA--> Change <--IsA-- Receive <--Antonym--> Serve 