1. Expenses that increase rapidly and uncontrollably, exceeding budget expectations or forecasts
The construction project faced runaway costs that doubled the original budget.
O projeto de construção enfrentou custos descontrolados que dobraram o orçamento original.
2. Financial expenses that spiral upward without effective management or intervention
Healthcare runaway costs have become a major concern for government budgets.
Os custos descontrolados da saúde se tornaram uma preocupação importante para os orçamentos governamentais.