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A consecutive series of defeats, losses, or instances of ill fortune. The team, once considered likely to win the championship for a second straight year, has lost another miserable game this afternoon, continuing its 14-game losing streak. After seeming unable to get a foothold in the smartphone market, the tech giant finally broke its losing streak with its latest device, which has proven enormously popular with people around the globe. Yet another company that I invested in crashed and burned. I am on one heck of a losing streak in the stock market.
Fig. a series of losses [in sports, for instance]. (*Typically: be on ~; have ~; continue one's ~.) The team was on a losing streak that started nearly three years ago.