Close is a synonym of Tight. Tight is the opposite of Loose. Loose is the opposite of Stretch. 
Cousin is a type of Relative. Spouse is a type of Relative. Spouse is related to Father. Dad is a type of Father. 
Close <--Synonym--> Tight <--Antonym--> Loose <--Antonym--> Stretch 
Cousin --IsA--> Relative <--IsA-- Spouse <--RelatedTo--> Father <--IsA-- Dad 