or year o·ver year

[ yeer-oh-ver-yeer ]

adverb, adjectiveAccounting, Finance.
  1. as compared with the corresponding figure 12 months earlier; involving or reckoned by such a comparison: Exports fell 2 percent year over year in May.February rents for one-bedroom apartments saw a year-over-year increase of 6 percent.Abbreviation: YoY

  2. 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.

Origin of year-over-year

First recorded in 1790–1800, for an earlier sense

Words Nearby year-over-year Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use year-over-year in a sentence