underchargePronunciation: /ʌndəˈtʃɑːdʒ/Translate undercharge | into Italian | into Spanish Definition of undercharge verb [with object] 1charge (someone) a price or amount that is too low: the retailer has been undercharged and actually owes the supplier more money 2give less than the proper charge to (an electric battery). noun a charge that is insufficient. undercharge in other Oxford dictionaries Definition of undercharge in the US English dictionary