Disinflation
Think of it this way: if inflation ran at 8 % last year and runs at 4 % this year, that is disinflation. The price level is still higher than a year ago — it has not reversed — but it is climbing at half the previous pace. This distinction matters enormously in economic commentary and market data. A CPI report showing inflation dropping from 5 % to 3 % is disinflationary, not deflationary, and the two words carry very different policy and market implications.
Central banks typically welcome moderate disinflation when they have been fighting high inflation with rate hikes. It suggests their policy is working. Markets often interpret sustained disinflation as a signal that rate cuts may eventually follow, which historically has influenced bond prices, currency values, and equity valuations. You can track how inflation figures evolve over time using the percent-change columns on the indicators pages — the year-over-year column is most useful for spotting disinflationary trends.
The common confusion between disinflation and deflation trips up even experienced readers. Remember: disinflation = inflation rate falling (but still positive); deflation = price level falling (inflation rate negative). A second nuance is that disinflation in core inflation carries more weight than disinflation in the volatile headline figure, because headline can swing on energy prices alone. Economists and central bank watchers focus on whether the disinflationary trend is broad-based across categories or concentrated in one or two components.