shortchange
verbUK /ˌʃɔːtˈtʃeɪndʒ/
US /ˌʃɔːrtˈtʃeɪndʒ/
To give someone less money back than they should get.
The cashier shortchanged me by two dollars.
RELATED WORDS
OTHER MEANINGS
2. To treat someone unfairly by not giving them what they deserve.
The team shortchanged its fans by not trying hard.
3. To fail to give enough of something needed.
The report shortchanges the importance of sleep.
4. To give back too little change after a purchase.
He shortchanged the customer without noticing.