phaseout

1 of 2

noun

phase·​out ˈfāz-ˌau̇t How to pronounce phaseout (audio)
Synonyms of phaseoutnext
: a gradual stopping (as in operations or production) : a closing down by phases

phase out

2 of 2

verb

phased out; phasing out; phases out

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
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Noun
For married couples filing jointly, the phaseout begins at $200,000 and ends at $250,000, per the IRS. Mike Winters, CNBC, 13 Feb. 2026 The phaseout takes place at a rate of 20% for each additional dollar of income. Susan Tompor, USA Today, 3 Feb. 2026
Verb
Jett is one of three proponents of an initiative petition, State Question 843, that seeks to gradually phase out property taxes for those with a homestead exemption. Barbara Hoberock, Oklahoma Voice, 17 Feb. 2026 The tax break starts to phase out, or get smaller, when earnings exceed $150,000 for single filers or $300,000 for joint filers. Kate Dore, Cfp®, Ea, CNBC, 17 Feb. 2026 See All Example Sentences for phaseout

Word History

First Known Use

Noun

1951, in the meaning defined above

Verb

1940, in the meaning defined at transitive sense

Time Traveler
The first known use of phaseout was in 1940

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Cite this Entry

“Phaseout.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/phaseout. Accessed 18 Feb. 2026.

Kids Definition

phase out

verb
: to discontinue doing, producing, or using
phasing out old machinery

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