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Phase Out in a Sentence: Meaning & Examples

    Cartoon pupils carry old classroom equipment away one item at a time, showing phase out in a sentence as a gradual change.

    To phase out means to stop using something gradually, over a period of time rather than all at once. Use phase out in a sentence with the thing being removed as the object: “The council will phase out diesel buses by 2030.” It is a separable phrasal verb, so a pronoun goes between the two words.

    Phase out at a glance

    • Phase out is a transitive phrasal verb, so it always needs an object such as a product, a fee or a service.
    • It is separable: you can write phase out the old buses or phase the old buses out.
    • With a pronoun the object must sit inside the phrase, as in phase it out, never phase out it.
    • The passive is common and strands the particle: the levy was phased out over three years.
    • Its opposite is phase in, which means to introduce something gradually.

    What does phase out mean?

    Phase out is a phrasal verb meaning to remove or stop using something in stages, so that the change happens little by little instead of overnight. The Cambridge entry for phase out records this gradual sense and the related noun phase-out. The verb usually describes policies, products, chemicals or subsidies, and the emphasis always falls on the slow timetable rather than the final removal.

    Sense Plain meaning Example sentence
    Remove gradually Stop using something step by step The airline phased out its oldest planes.
    Withdraw over time End a policy or payment slowly The grant was phased out across five years.
    Retire a model Replace a product in stages The maker phased out the petrol engine in stages.

    One limitation is worth stating plainly. Phase out does not mean abolish, because it promises a period of change. A law can be abolished in a single vote, but a product is phased out through a timetable. Where something shrinks gradually without a formal end, a phrase like taper off is often closer to what a writer means.

    How do you use phase out in a sentence?

    Phase out is separable, which is the grammar point that decides most sentences. The object can follow the particle, as in phase out the tax, or sit between the verb and the particle, as in phase the tax out. A pronoun must go in the middle, and the passive is very common in official writing.

    Pattern Example What it signals
    phase out + object The city will phase out plastic cups. The default order; the object follows the whole phrase.
    phase + object + out The city will phase the plastic cups out. Separated order, natural when the object is long or already known.
    phase + pronoun + out The city will phase them out by June. A pronoun must sit between the verb and the particle.
    be phased out Coal power is being phased out. Passive voice; the particle strands at the end of the clause.
    phase in The new rules will be phased in gradually. The opposite verb, introducing something in stages.

    The same particle appears in other phrasal verbs such as ask out, where a pronoun object also slots between the verb and out.

    A cartoon child slides a block into the middle of two other blocks, showing that the object goes between phase and out.
    The pronoun object sits inside the phrase: phase it out, not phase out it.

    Phase out in a sentence: examples across contexts

    Phase out keeps its core meaning while the setting changes. The ten sentences below move from a classroom to environmental policy, and each names a timetable.

    Context Example sentence Why this works
    Classroom Our school will phase out paper worksheets over two terms. Names the thing removed and the timetable, which the verb demands.
    Workplace email We plan to phase the old booking system out by December. Uses the separated order because the object is long and specific.
    News report The government is phasing out its petrol subsidy this year. The passive would hide the actor, so the active keeps the subject clear.
    Legal writing The regulations phase out the chemical by 2027. Official writing prefers the present tense with a firm end date.
    Environmental policy Single-use plastics are being phased out across the region. The passive suits a policy that applies to everyone.
    Business memo The board wants to phase out overtime before the new budget. Shows a deliberate, staged change rather than a sudden cut.
    Technical writing The firmware is phased out in favour of the new version. The passive names the replaced item, which is the useful fact.
    Health notice The clinic phased out its paper records last spring. A dated change with a clear object reads naturally in the past tense.
    Conversation They are phasing it out, so grab one while you can. The pronoun inside the phrase is exactly how speakers use it.
    Historical account The old coin was phased out long before the public noticed. Shows how a phase-out can be quiet and gradual.

    Phase out vs abolish

    Phase out and abolish both end something, and the timetable separates them. Phase out removes something in stages and almost always names a period; abolish ends something completely and at once, often by law. Choosing the wrong one changes the reader’s sense of how long the change will take.

    Attribute phase out abolish
    Speed Gradual, over a stated period Immediate, in one act
    Typical subject A company, council or regulator A parliament or governing body
    Typical object A product, fee, subsidy or chemical A law, practice or institution
    Register Business, policy and journalism Legal, political and historical
    What it implies A managed transition with a timetable A clean and final end

    Verdict: choose phase out when the removal takes time, and abolish when an authority ends something outright in a single decision.

    Word forms and grammar of phase out

    Phase out keeps the regular inflections of phase, and the noun takes a hyphen: phase-out. The table also shows the opposite verb, because learners often reach for phase out when they mean replace a system with a newer one.

    Form Part of speech Example
    phase out phrasal verb, base form The firm will phase out the old packaging.
    phases out phrasal verb, third person singular The factory phases out each model after three years.
    phased out phrasal verb, past and past participle The levy was phased out last spring.
    phasing out phrasal verb, present participle The airline is phasing out paper tickets.
    phase-out noun The phase-out of the scheme takes six years.
    phase in phrasal verb, opposite meaning The new rules were phased in over a term.

    Keep the pair apart: you phase out what you remove and phase in what you add. When the thing being removed is a person rather than a product, retire is the natural verb, because phase out describes systems and products.

    Common mistakes with phase out

    • Incorrect: They phased out of the old service. Correct: They phased the old service out. Rule: Phase out is transitive and takes a direct object, so it needs no of.
    • Incorrect: The company phased out it last year. Correct: The company phased it out last year. Rule: A pronoun object must sit between the verb and the particle.
    • Incorrect: The new rules were phased out into effect. Correct: The new rules were phased in. Rule: Phase out removes something; phase in introduces it.
    • Incorrect: The manager phased out the team in one afternoon. Correct: The manager cut the team in one afternoon. Rule: Phase out implies a gradual timetable, so a single sudden action needs a different verb.
    • Incorrect: The tax was phase out gradually. Correct: The tax was phased out gradually. Rule: The passive needs the past participle phased, not the base form.

    Practice using phase out

    Work through the six items, then read the reasons rather than only the answers.

    1. Fill the gap: The council plans to ______ the old parking meters out by June.
    2. Choose the better word: Parliament (phased out / abolished) the tax in a single vote.
    3. Correct the error: The factory phased out it last month.
    4. Build a sentence: use be phased out about a school rule.
    5. Spot the register: which belongs in a policy report — the fee was phased out over three years, or they got rid of the fee bit by bit?
    6. Rewrite with the pronoun: The team phased out the paper forms. Use them.

    Answers

    1. phase — the separable phrasal verb splits, and the object out is already in the right place.
    2. abolished — a single vote ends something at once, so phase out does not fit the timetable.
    3. The factory phased it out last month — the pronoun belongs between verb and particle.
    4. Model answer: The old uniform rule was phased out over two school years.
    5. The fee was phased out over three years — the passive and the date suit a policy report.
    6. The team phased them out — the pronoun goes inside the phrase.

    The bottom line

    Use phase out in a sentence when something is removed in stages and the timetable matters, and keep the object close to the verb. The two details that decide most sentences are these: the verb is separable, so a pronoun goes between phase and out, and it is not a synonym for abolish, because it always promises a gradual change. A business that reduces its activity gradually may instead wind down its operations.

    A cartoon single scene shows a child removing blocks one at a time from a shelf while another child clears the whole shelf in one sweep.
    Phase out is gradual; abolish is sudden and complete.

    Frequently asked questions about phase out

    Is phase out one word or two?

    As a verb it is always two words, as in they will phase out the charge. The noun is written with a hyphen, phase-out, as in the phase-out begins in July. Treating the verb as one word is the spelling slip readers notice first.

    Is phase out separable?

    Yes. The object can follow the particle or sit between the verb and out, so phase out the fee and phase the fee out are both correct. A pronoun must go in the middle, giving phase it out. The passive keeps them together at the front and strands the particle: the fee was phased out.

    Can you phase out a person?

    You can, but it usually sounds cold because the verb is built for products and policies. Managers phase out a role or a shift rather than a colleague. When a person leaves gradually and willingly, retire or step down is the kinder and more accurate choice, and it keeps the human subject in view.

    What is the difference between phase out and phase in?

    Phase out means to remove something gradually, and phase in means to introduce something gradually. A council phases out old bins as it phases in new ones. They often appear in the same sentence because a managed change moves in both directions at once, removing one thing while adding another.


    “Have you ever heard of the term ‘phase out’? This commonly used phrase refers to the gradual discontinuation or removal of something over a period of time.”

    Phasing out can apply to various aspects of life, from products and services to policies and practices. It is often done to make way for new and improved alternatives, address concerns like environmental impact, or adapt to changing circumstances.

    7 Examples Of Phase Out Used In a Sentence For Kids

    • Phase out the old toys and bring in new ones.
    • We will phase out the old pencils and use new ones now.
    • Let’s phase out the red blocks and play with the green ones.
    • It’s time to phase out the broken crayons and get new ones.
    • We need to phase out the old books and read new ones.
    • Remember to phase out the dirty paintbrushes and get clean ones.
    • Let’s phase out the broken puzzles and start fresh ones.

    14 Sentences with Phase Out Examples

    • Phase out old textbooks and update your study material regularly.
    • Make a plan to phase out unhealthy food choices from your diet and opt for healthier alternatives.
    • It’s important to phase out procrastination and start working on assignments well ahead of time.
    • Consider ways to phase out disposable plastic items from your daily routine and switch to eco-friendly options.
    • Phase out late-night study sessions and prioritize getting enough rest for better academic performance.
    • Phase out negative self-talk and practice self-care to improve your mental health.
    • Create a budget to phase out unnecessary expenses and save money for important college needs.
    • Take steps to phase out toxic relationships and surround yourself with positive influences.
    • Use technology to phase out paper waste by taking digital notes and submitting assignments online.
    • Phase out irrelevant coursework and focus on subjects that align with your future career goals.
    • Gradually phase out reliance on caffeine to stay awake during lectures and prioritize a healthy sleep schedule.
    • Phase out unhealthy study habits like last-minute cramming and adopt effective studying techniques.
    • Utilize career counseling services to phase out confusion about your future and gain clarity on your desired career path.
    • Join extracurricular activities to phase out boredom and enhance your college experience.

    How To Use Phase Out in Sentences?

    Phase Out is a phrasal verb that is used to describe the process of gradually discontinuing or ending something. Here’s a guide on how to correctly use Phase Out in a sentence for beginners:

    Example sentence: The company decided to phase out their outdated product line and focus on developing new and innovative products.

    1. Subject: Identify the subject in your sentence, which is usually the person or thing performing the action. In the example sentence, the subject is “the company.”

    2. Verb: The main verb in this case is “decided,” but the phrasal verb “phase out” is the focus of this guide.

    3. Object: After using “phase out,” you need to mention what is being discontinued or ended. In the example sentence, the object is “their outdated product line.”

    4. Context: Make sure to provide context or reasons behind the phasing out process if necessary. This helps the reader understand why something is being discontinued.

    Remember that “phase out” is separable, meaning you can place the object between the main verb and the particle (out). However, it is also acceptable to keep them together.

    By following these simple steps, you can effectively use “Phase Out” in a sentence and communicate your message clearly.

    Conclusion

    In conclusion, many companies, governments, and industries have begun to phase out outdated technologies, products, and practices to make way for more sustainable alternatives. The decision to phase out certain activities is often driven by environmental concerns, consumer demand for greener options, or the need to comply with new regulations. By gradually eliminating these outdated elements, organizations can reduce their environmental impact and adapt to the changing expectations of society.

    The process of phasing out involves a strategic and systematic approach to transitioning away from unsustainable practices. Through the gradual removal of these outdated elements, businesses and governments can improve their environmental performance and demonstrate their commitment to sustainability. Overall, the phase-out of outdated technologies and practices is an essential step towards building a more sustainable future for generations to come.

    Written & edited by

    Founder & Editor, StartsWithy

    Robin founded StartsWithy in 2022 to make English words easier to understand and use. Robin oversees our 30,000+ guides, checks meanings and grammar against trusted dictionaries such as Cambridge, Oxford Learner’s and Collins, and is accountable for every correction we make.