expression, noun
lost decade; decade of economic stagnation
Primarily refers to Japan's period of economic stagnation from the early 1990s to early 2000s, often specifically 1992–2002. Used in economic and historical discussions.
日本経済は失われた１０年からなかなか立ち直れなかった。
The Japanese economy struggled to recover from the lost decade.
失われた１０年の間に、多くの企業が倒産した。
Many companies went bankrupt during the lost decade.
Refers to the extended period of stagnation covering roughly two decades, from the early 1990s to the early 2010s. 失われた１０年 is the earlier, shorter phase.
The collapse of the asset price bubble in the early 1990s, which triggered the lost decade. バブル崩壊 is the event, while 失われた１０年 describes the subsequent economic period.
A fixed phrase calqued from English 'lost decade', referring to Japan's post-bubble economic stagnation. The term became widely used in economic and media discourse from the late 1990s onward.