undercharge

nouns

a price that is too low
undercharge
is a type of (narrower)
the price charged for some article or service
"the admission charge"
charge
an insufficient charge
undercharge
is a type of (narrower)
a quantity of explosive to be set off at one time
"this cartridge has a powder charge of 50 grains"
burster, bursting charge, charge, explosive charge

verbs

charge (someone) too little money
undercharge
antonym
overcharge
is a type of (narrower)
demand payment
"Will I get charged for this service?"; "We were billed for 4 nights in the hotel, although we stayed only 3 nights"
bill, charge