FINANCE to borrow too much money in relation to your ability to make payments on the debt:
• The country may find it has overborrowed in the international capital markets.
— overborrowed adjective [not before a noun] :
• The increase in lending to stimulate the economy has not worked as companies and individuals are already so overborrowed.
— overborrowing noun [uncountable] :
• The state encouraged overborrowing by firms and overlending by banks because of its commitment to higher growth.
Financial and business terms. 2012.