Price-slashing failed to rescue a bleak holiday season for beleaguered retailers, as sales plunged across most categories on shrinking consumer spending, according to new data released Thursday.

Despite a flurry of last-minute shoppers lured by the deep discounts, total retail sales, excluding automobiles, fell over the year-earlier period by 5.5% in November and 8% in December through Christmas Eve, according to MasterCard Inc.'s SpendingPulse unit.

The holiday retail-sales decline was much worse than the already-dire picture painted by industry forecasts, which had predicted sales ranging from a 1% drop to a more optimistic increase of 2.2%.

Luxury goods, once considered immune from economic turmoil, were hardest hit, with sales falling 21.2%, compared with a jump of 7.5% a year ago, when the economy had just begun to sputter. Including jewelry sales, the luxury sector plunged by a whopping 34.5%.

During the same period last year, overall retail sales rose a modest 2.4%, helped by late-season discounting that enticed procrastinating shoppers. But this year, after a moderate uptick in shopping activity boosted by steep promotions the Friday after Thanksgiving, shoppers closed their wallets and reopened them only cautiously, worried by job losses, a sinking stock market and a recession climbing into its second year.