undercharge
🇺🇸
/ˌʌndərˈtʃɑːrdʒ/
🇬🇧
/ˌʌndəˈtʃɑːdʒ/
to charge someone less money than they should be charged for something, often by mistake
The shopkeeper realized he had undercharged the customer for the groceries and quickly corrected the mistake.
店主意识到他给顾客的杂货收费不足,迅速纠正了错误。