Thesaurus Dictionary
Synonyms and antonyms of Overcharging and underpaying money in American Thesaurus
Overcharging and underpaying money
shortchange (verb)
if you shortchange someone who is paying for something, you do not give them back enough money when they have paid more than the price of the thing
stiff (verb)
Americaninformal to not pay someone money that you owe them, especially by not leaving any money as a tip in a restaurant