deflaation
Deflaation, more commonly spelled deflation, is a sustained fall in the general price level of goods and services in an economy. It is the opposite of inflation and is typically measured by price indices such as the consumer price index (CPI) or the GDP deflator. Deflation can occur with weak demand and rising real debt burdens, and it can accompany disinflation, a slowdown in the rate of price increases.
Causes of deflation can be broadly categorized into demand-side, supply-side, and monetary factors. Demand-side deflation arises
Effects of deflation are often adverse for an economy. It raises the real value of outstanding debt,
Measurement and policy: Price indices such as the CPI, core CPI (excluding volatile items like food and