year-over-year
Americanadverb
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as compared with the corresponding figure 12 months earlier; involving or reckoned by such a comparison: YoY
Exports fell 2 percent year over year in May.
February rents for one-bedroom apartments saw a year-over-year increase of 6 percent.
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in each year that passes after an initial investment, the start of an observed trend, etc.; annual or annually.
The gain from this software purchase has been our best ROI year over year.
Over the last decade, the year-over-year trend in inflation has strongly correlated with the year-over-year trend in GDP.
Etymology
Origin of year-over-year
First recorded in 1790–1800, for an earlier sense
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
The core personal consumption expenditures index is the Fed’s preferred measure of inflation, and the most recent data showed it measured 3% year-over-year for August.
From MarketWatch ● Oct. 14, 2026
The year-over-year increase in September was below 1%, while the month historically sees gains of 2% to 4%, according to Kelley Blue Book.
From The Wall Street Journal ● Oct. 14, 2026
The others are expected to show year-over-year increases in provisions.
From MarketWatch ● Oct. 11, 2026
Delta expects fourth-quarter revenues to increase 20% year-over-year amid strong holiday bookings.
From The Wall Street Journal ● Oct. 9, 2026
In December 2007 inflation reached 4.1% on a year-over-year basis, or higher than the upper limit of the National Bank of Poland's target range.
From The 2008 CIA World Factbook by United States. Central Intelligence Agency
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
