Answer: 
When your bank account is debited, money is taken out of the account. A negative. 
The opposite of a debit is a credit, in which money is added to your account. It’s a positive. 
Reason: 
When someone credits your account, example you return something to Amazon they credit your account $x 
While a debit is like a debit card, when you use it to buy something, money is taken from your account