Stumble is related to Slip. Slip is a type of Forget. Forget is the opposite of Memory. 
Male is a synonym of Pin. Pin is a synonym of Nail. Nail is part of Toe. Toe is related to Blow. 
Stumble <--RelatedTo--> Slip --IsA--> Forget <--Antonym--> Memory 
Male <--Synonym--> Pin <--Synonym--> Nail --PartOf--> Toe <--RelatedTo--> Blow 