the quality of being careful with money or resources, especially by avoiding waste

The strong work ethic and thriftiness helped them to accumulate wealth quickly. 负责的工作态度与节俭作风使他们迅速积累了财富。

His thriftiness is legendary. He flies economy class, and shops endlessly for bargains. 他的节俭是出了名的，飞机坐经济舱，购物总是淘便宜货。