phaseout

1 of 2

noun

phase·​out ˈfāz-ˌau̇t 

: 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

Noun

Low- and moderate-income workers would be eligible for a 1% automatic contribution and up to a 4% matching contribution from the federal government, with a phaseout at median income. —Ryan Ermey, CNBC, 1 May 2026

Income phaseouts can reduce or eliminate new deductions for seniors, overtime, tips and car loan interest on 2025 federal tax returns. —Susan Tompor, Freep.com, 2 Apr. 2026

Verb

Reuters described the Santa Marta talks as a shift from narrowly targeting emissions toward transforming economies to phase out fossil fuels, with 57 countries attending and discussions focusing on national roadmaps, legal and financial obstacles, and the role of a new science panel. —Ingmar Rentzhog, Forbes.com, 15 May 2026

Kool-Aid Hydration does not use artificial dyes, as part of Kraft Heinz’s broader pledge to phase out synthetic colors by the end of 2027. —Amelia Lucas, CNBC, 13 May 2026

Word History

First Known Use

Noun

1951, in the meaning defined above

Verb

1940, in the meaning defined at transitive sense

Rhymes for phaseout

• roundabout
• runabout
• sauerkraut
• thereabout
• turnabout
• about
• bailout
• blackout
• blowout
• breakout
• burnout
• buyout

Kids Definition

phase out

verb

: to discontinue doing, producing, or using

phasing out old machinery