The worst week for the stock market in two months ended with a whimper in thin trading Friday.

The Dow Jones industrial average lost 4.8 percent this week, while the broader Standard & Poor’s 500-stock index fell 4.7 percent. It was the worst week for both since Sept. 23.

Major indexes wavered throughout Friday’s session, which was shortened because it was the day after Thanksgiving. Worries about Europe’s debt crisis flared up again after Italy had to pay 7.8 percent to borrow for two years at a debt auction. It was another sign that investors were increasingly hesitant to lend to European countries.

The euro slipped to $1.3232, losing 2 percent this week against the dollar. The drop puts the euro at its lowest level since Oct. 4.

Higher interest rates on government debt of Italy, Spain and other European countries have rattled stock markets in recent weeks. When borrowing costs climb above the 7 percent threshold, it deepens investor fears about a government’s ability to manage its debts. Greece, Ireland and Portugal had to seek financial lifelines when their interest rates crossed the same mark.