Confident is the opposite of Regret. Regret is related to Negative. Negative is related to Debt. Debt is related to Deficit. 
Dog is related to Bow. Bow is related to Shooting. Rifle can be used for Shooting. 
Confident <--Antonym--> Regret <--RelatedTo--> Negative <--RelatedTo--> Debt <--RelatedTo--> Deficit 
Dog <--RelatedTo--> Bow <--RelatedTo--> Shooting <--UsedFor-- Rifle 