surcharge
noun
• an additional charge or payment.
• "we guarantee that no surcharges will be added to the cost of your holiday"
• a mark printed on a postage stamp changing its value.
surcharge
verb
• exact an additional charge or payment from.
• "retailers will be able to surcharge credit-card users"
• mark (a postage stamp) with a surcharge.
Origin:
late Middle English (as a verb): from Old French surcharger (see sur-1, charge). The early sense of the noun (late 15th century) was ‘excessive load’.
