Safe is related to Deposit. Deposit is the opposite of Withdrawal. 
Check is related to Wage. Wage is related to Bet. Bet is related to Double. Double is related to Starting. 
Safe <--RelatedTo--> Deposit <--Antonym--> Withdrawal 
Check <--RelatedTo--> Wage <--RelatedTo--> Bet <--RelatedTo--> Double <--RelatedTo--> Starting 