Cross is the opposite of Happy. Happy is a synonym of Suitable. Suitable is a synonym of Just. Just is related to Equality. 
Fun is related to Mall. Mall is related to Teenager. 
Cross <--Antonym--> Happy <--Synonym--> Suitable <--Synonym--> Just <--RelatedTo--> Equality 
Fun <--RelatedTo--> Mall <--RelatedTo--> Teenager 