phase out
B2-C1 (Upper Intermediate to Advanced)Formal to Neutral (Common in business, technical, policy, and news contexts)
Definition
Meaning
To gradually discontinue or remove something over a period of time.
To systematically eliminate a product, service, practice, or technology through a planned transitional process, often replacing it with something newer or better.
Linguistics
Semantic Notes
Implies a deliberate, controlled process rather than an abrupt stop. Often used for policies, products, regulations, or technologies. Carries a nuance of planned obsolescence or modernization.
Dialectal Variation
British vs American Usage
Differences
No significant difference in meaning or usage. Slightly more common in American business/policy jargon.
Connotations
Neutral to slightly positive when implying progress (e.g., phasing out fossil fuels). Can be negative if it implies job losses or removal of a valued service.
Frequency
Equally frequent in both varieties.
Vocabulary
Collocations
Grammar
Valency Patterns
[Subject - often an organization] + phase out + [Direct Object - the thing being removed]be phased out (passive)Vocabulary
Synonyms
Strong
Neutral
Weak
Vocabulary
Antonyms
Phrases
Idioms & Phrases
- “On its way out”
- “Going the way of the dodo”
Usage
Context Usage
Business
The company will phase out its older software models by the end of next quarter.
Academic
The study examined the social impacts of phasing out coal subsidies in the region.
Everyday
Our local council is phasing out plastic bags in all shops.
Technical
The old network protocol is being phased out in favour of the new, more secure standard.
Examples
By Part of Speech
verb
British English
- The NHS is phasing out certain types of single-use plastics.
- The government plans to phase out petrol and diesel cars by 2035.
American English
- The university is phasing out its traditional printed yearbook.
- The EPA finalized rules to phase out certain refrigerants.
adverb
British English
- The change was implemented phase-out over eighteen months.
American English
- The chemicals were removed phase-out according to the treaty schedule.
adjective
British English
- The phased-out model will no longer receive security updates.
- They offered discounts on phased-out stock.
American English
- Phased-out regulations created a complex compliance landscape.
- Support for the phased-out software ends next month.
Examples
By CEFR Level
- The shop is phasing out plastic bags.
- The old bus tickets are being phased out; you must now use the app.
- Many countries want to phase out coal power.
- The manufacturer announced it would phase out the controversial ingredient by 2027.
- Subsidies for fossil fuels need to be phased out to meet climate targets.
- The policy of phased-out withdrawal allowed investors time to adjust their portfolios.
- Critics argue that phasing out the tax credit will stifle innovation in the sector.
Learning
Memory Aids
Mnemonic
Think of the 'phases' of the moon changing gradually. 'Phase out' is like the moon waning—slowly disappearing over time.
Conceptual Metaphor
PROGRESS/CHANGE IS A JOURNEY (moving from an old state to a new one in stages). OBSOLESCENCE IS FADING (like a light being dimmed gradually).
Watch out
Common Pitfalls
Translation Traps (for Russian speakers)
- Avoid direct translation with 'фаза' as a noun. The verb is 'поэтапно отказываться / выводить из эксплуатации'.
- Do not confuse with 'вытеснять' (to displace), which lacks the planned, gradual nuance.
Common Mistakes
- Using it for immediate cessation: ❌ 'They phased out the service yesterday.' (Use 'discontinued' or 'stopped').
- Using the wrong preposition: ❌ 'phase off' ❌ 'phase from'. The correct particle is *out*.
- Incorrect passive form: ❌ 'It was phase out.' Correct: 'It was phased out.'
Practice
Quiz
Which sentence uses 'phase out' correctly?
FAQ
Frequently Asked Questions
It is neutral to formal. It's perfectly at home in business, policy, and technical reports, but can also be used in everyday news contexts.
It is generally used for things (products, systems, practices). Using it for people (e.g., 'phasing out older employees') is dehumanizing and should be avoided. Use 'retire gradually' or similar.
The direct antonym is 'phase in', which means to introduce something gradually.
The past tense and past participle is 'phased out'. E.g., 'They phased out the system last year.' / 'The system was phased out.'