Definition of overfulfillment in English:

overfulfillment

(British overfulfilment)

noun

See overfulfill

‘Data show that this year, the Government will register another overfulfilment of the budget revenues, which means that taxes can be lowered.’
‘Behind Winston's back, the voice from the telescreen was still babbling away about pig-iron and the overfulfilment of the Ninth Three-Year Plan.’