phase·​out | \ ˈfāz-ˌau̇t How to pronounce phaseout (audio) \

Definition of phaseout

 (Entry 1 of 2)

: a gradual stopping (as in operations or production) : a closing down by phases

phase out

phased out; phasing out; phases out

Definition of phase out (Entry 2 of 2)

transitive verb

: to discontinue the practice, production, or use of by phases

intransitive verb

: to stop production or operation by phases

Examples of phaseout in a Sentence

Recent Examples on the Web: Noun Likewise, the income phaseout range for married couples and head of household filers will also get a boost. Aimee Picchi, CBS News, 12 Nov. 2021 The document urged countries to accelerate a coal phaseout and eliminate subsidies for fossil fuels. New York Times, 12 Nov. 2021 That projection was echoed in the coal phaseout signed in Scotland last week. Benjamin Storrow, Scientific American, 8 Nov. 2021 The income phaseout range for taxpayers making contributions to a Roth IRA was increased from $125,000 to $129,000 for singles and from $140,000 to $144,000 for heads of household. Chris Morris, Fortune, 5 Nov. 2021 In 2022, the AGI phaseout range for taxpayers making contributions to a Roth IRA is from $204,000 to $214,000 for married couples filing jointly, up from $198,000 to $208,000 in 2021. Ashlea Ebeling, Forbes, 4 Nov. 2021 The rationale for the early phaseout was to limit its costs — because they weren’t immediately reimbursed by the federal government —and also provide operators time to find new housing. Los Angeles Times, 20 Aug. 2021 Government mandates have already driven large private capital flows into expanding renewable energy, and now financial firms are eager to kick the phaseout of fossil fuels into high gear. Joshua Rauh And Mels De Zeeuw, WSJ, 11 Nov. 2021 Costa Rica and Denmark are rallying countries to join their Beyond Oil and Gas Alliance, dedicated to the phaseout of oil and gas production. Washington Post, 7 Nov. 2021 Recent Examples on the Web: Verb The measure, an initiative petition brought to the ballot by a coalition of neighborhood groups, would phase out short-term rentals in residential areas of unincorporated Lincoln County over five years and halt immediately the issue of new licenses. oregonlive, 3 Nov. 2021 This plan would also phase out and put a hold on future federal regulations on carbon emissions such as caps on emissions or other emissions reductions guidelines. London Gibson, The Indianapolis Star, 21 Sep. 2021 The credit delivers payments of up to $300 per month for children younger than 6 and $250 per month for children ages 6 to 17, for families earning up to $150,000 a year, at which point the benefit begins to phase out gradually. New York Times, 15 July 2021 The enhanced portion of the credit begins to phase out for single filers with annual incomes of more than $75,000, heads of households earning more than $112,500 and joint filers making more than $150,000. Tami Luhby, CNN, 22 June 2021 That rule begins to phase out in 2023 and expires at the end of 2026. Geoff Colvin, Fortune, 7 June 2021 The stimulus check amount begins to phase out above these amounts. Zack Friedman, Forbes, 17 Mar. 2021 The credit begins to phase out for individuals earning more than $75,000 a year, or $150,000 for married couples filing jointly. Paul Davidson, USA TODAY, 12 Mar. 2021 Currently, Americans can claim up to $2,000 per child as a tax credit, which begins to phase out when income hits $200,000 for individuals and $400,000 for married couples. Richard Rubin, WSJ, 3 Mar. 2021

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'phaseout.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of phaseout


1951, in the meaning defined above


1940, in the meaning defined at transitive sense

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The first known use of phaseout was in 1940

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Last Updated

4 Dec 2021

Cite this Entry

“Phaseout.” Dictionary, Merriam-Webster, Accessed 7 Dec. 2021.

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English Language Learners Definition of phaseout

: the act of stopping something gradually over a period of time in a planned series of steps or phases

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