Definitions of surcharge:

• noun:   an additional charge (as for items previously omitted or as a penalty for failure to exercise common caution or common skill)
• verb:   charge an extra fee, as for a special service
• verb:   show an omission in (an account) for which credit ought to have been given
• verb:   fill to an excessive degree

  Example: "The air was surcharged with tension"

• verb:   print a new denomination on a stamp or a banknote
• verb:   fill to capacity with people

  Example: "The air raids had surcharged the emergency wards"

• verb:   place too much a load on
• verb:   rip off; ask an unreasonable price