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to phase out

to phase out

31 4.2
To stop using something slowly over time
  • phrasal verb
  • /feɪz aʊt/
translation icon : eliminar gradualmente
  • Germany says they're going to phase out nuclear power.
  • gradually phase out
  • phase out nuclear power
  • phase out inefficient subsidies

Like, yeah, OK, I think we are slowly phasing out of the crop top sort of thing.

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Examples

  • Without stronger government support, it will take decades to phase out gasoline-powered vehicles.

  • To reduce environmental impact, the city plans to phase out single-use plastic bags by next summer.

  • Switzerland, my country decided to phase out nuclear energy.

  • We're all working hard to phase out union recognition throughout all branches of the company.

    Fiction book (1999)
  • The German government, as you've probably heard, has phased out nuclear power.

  • Kmart is phasing out the sale of handgun ammunition.

  • Many conventional refrigerants have already been banned or are slated to be phased out.

    Academic text (1998)
  • Mercury levels are also expected to decrease as mercury-based biocides are phased out of paint.

    Academic text (1993)
  • Unpopular disciplines or whole departments can be phased out and replaced with newer course offerings that attract more students.

    Academic text (1998)
  • Over the next year, the school will phase out the use of plastic straws in the cafeteria.

Synonyms

to discontinue
vsto phase out
58 4.2

To stop something that is happening or being given

implies ending in stages rather than an unspecified stop
to retire
vsto phase out
28 2.8

Take something out of use when it is no longer needed

is about gradual removal over time rather than formal single removal
to dispense with
vsto phase out
24 6.3

To stop using something because you do not need it

is a gradual ending done in planned stages rather than immediate removal
to fade out
vsto phase out
15 3.9

Gradually become harder to see or quieter until it disappears

describes ending in stages rather than losing visibility
to taper off
vsto phase out
9 4.5

To become smaller or weaker over time until it stops

focuses on staged removal over time rather than simple decrease
to sunset
vsto phase out
  • Jargon
2 7.2

To stop a product or service gradually

is a gradual ending carried out in planned stages
to wind off
vsto phase out
6.8

To unroll something or slowly finish a task

is about ending in stages rather than stopping suddenly

Antonyms

14 4.0

Introduce something slowly in stages

How Gradual

to phase out
31 4.2
to withdraw
159 3.5
to terminate
147 4.6

Surface Forms

phase out infinitive
phased out past
phased out past participle
phasing out present participle
phases out third person singular

Morphology

phase + out

The meaning 'to gradually stop using or producing' is derivable from 'phase' (a stage; to carry out in phases) combined with the particle 'out' (meaning remove or bring to an end), so a learner who recognises both constituents can plausibly infer 'phase out' as remove in stages. However, this inference depends on knowledge of 'phase' as a verb and the phrasal verb use of 'out', which many B1 learners may lack, making the relation only partially predictable.

Etymology

Phase out may come from the image of moving something out in small steps. Imagine a light that gets dimmer in stages: each phase makes it a bit weaker until it is out. That's why phase out means 'to stop using or producing something slowly'.