B2 noun #6,000 most common 3 min read

obsolete

Something is obsolete when it is no longer used because a better, newer version exists.

Explanation at your level:

Something is obsolete when you do not use it anymore. For example, an old phone is obsolete because you have a new smartphone. It is old and not useful now.

We use the word obsolete to talk about things that are old and replaced by new things. If you have a computer from 1990, it is obsolete because it is too slow for today's internet.

The word obsolete describes technology or ideas that are no longer useful. Because technology changes fast, many gadgets become obsolete after only a few years. It is a common term in business when talking about old products.

Obsolete is used to indicate that something has been superseded by a more modern version. It is a formal term often found in technical or academic writing. When a manufacturing process is rendered obsolete, the company must change its strategy to survive.

In advanced contexts, obsolete can refer to social norms or linguistic patterns that have fallen out of favor. It carries a nuance of 'historical irrelevance.' Scholars might describe an obsolete theory as one that has been disproven or replaced by a more comprehensive scientific model.

At a mastery level, obsolete captures the inevitable decay of utility in a progressive society. It is often used in cultural critique to discuss the 'planned obsolescence' of consumer goods. The term reflects the tension between tradition and innovation, suggesting that even the most cutting-edge tools of today will eventually become the obsolete artifacts of tomorrow.

Word in 30 Seconds

  • Means no longer used
  • Common in technology
  • Adjective form only
  • Has a noun: obsolescence

When we say something is obsolete, we mean it has reached the end of its useful life. It is not necessarily broken; rather, it has been outpaced by progress.

Think about a floppy disk or a cassette tape. These items still exist, but they are obsolete because we now use cloud storage and streaming services. The world has moved on, and these older versions no longer fit into our modern daily routines.

You will often hear this word in business or tech news. Companies worry about their products becoming obsolete if they don't innovate. It is a powerful word that signals the transition from the 'old way' to the 'new way' of doing things.

The word obsolete comes from the Latin word obsoletus, which is the past participle of obsolescere, meaning 'to grow old' or 'to fall into disuse.'

It entered the English language in the 16th century. Interestingly, the Latin root is related to ob- (meaning 'away') and solere (meaning 'to be accustomed'). So, etymologically, it literally describes something that we are no longer 'accustomed' to using.

Over the centuries, it has shifted from describing old-fashioned clothes or customs to being the go-to term for the rapid pace of technological change in the digital age.

You will most commonly see obsolete used as an adjective following a 'to be' verb, such as 'The technology became obsolete.' It is a formal word, so you might use it in a report or a professional presentation rather than in casual slang.

Common collocations include technologically obsolete, rendered obsolete, and completely obsolete. It carries a slightly clinical or objective tone, making it perfect for describing market trends or historical shifts.

Avoid using it to describe people; it is almost exclusively reserved for objects, systems, or ideas.

While 'obsolete' is a standalone adjective, it is often found in phrases like 'go the way of the dinosaur', which means to become obsolete. Another common expression is 'a relic of the past', referring to something that is obsolete and historic.

You might also hear 'outdated and obsolete' used as a rhyming emphasis. Another phrase is 'past its prime', which is a softer way of saying something is becoming obsolete. Finally, 'on its way out' describes something currently in the process of becoming obsolete.

Pronunciation: In British English, it is often pronounced /ˌɒb.səˈliːt/, while American English often shifts the stress to the first syllable: /ˈɑːb.sə.liːt/. Both are widely accepted.

Grammar: It is an adjective, so it doesn't have a plural form. You cannot say 'an obsoletes.' Instead, use it before a noun ('an obsolete machine') or after a linking verb ('the machine is obsolete').

It is a gradable adjective, so you can use 'completely' or 'largely' to modify it, though some purists argue that if something is obsolete, it is already 100% finished.

Fun Fact

It shares a root with 'solemn' in some interpretations, but mostly relates to 'accustomed'.

Pronunciation Guide

UK /ˌɒb.səˈliːt/

Starts with 'ob' like 'object'.

US /ˈɑːb.sə.liːt/

Stress is on the first syllable.

Common Errors

  • Misplacing the stress
  • Pronouncing the 't' at the end too softly
  • Adding an extra syllable

Rhymes With

complete delete repeat compete fleet

Difficulty Rating

Reading 2/5

Easy to understand in context

Writing 2/5

Useful for formal writing

Speaking 2/5

Common in professional settings

Listening 2/5

Frequently heard in news

What to Learn Next

Prerequisites

old new use

Learn Next

obsolescence supersede antiquated

Advanced

obsolescent anachronism

Grammar to Know

Adjective placement

The obsolete car.

Linking verbs

It is obsolete.

Gradable adjectives

Very obsolete.

Examples by Level

1

My old phone is obsolete.

phone / old / no use

adjective after verb

1

This software is now obsolete.

2

The machine is obsolete and broken.

3

We replaced the obsolete system.

4

That style is completely obsolete.

5

Are these maps obsolete?

6

The manual is now obsolete.

7

He found an obsolete camera.

8

Why is this tool obsolete?

1

The company stopped making the obsolete parts.

2

Technology makes many jobs obsolete.

3

My computer is becoming obsolete.

4

The law is now considered obsolete.

5

They sold their obsolete equipment.

6

Is this format obsolete yet?

7

Many skills become obsolete over time.

8

The design is functionally obsolete.

1

The factory was closed because its methods were obsolete.

2

Digital streaming has rendered physical discs obsolete.

3

He argued that the curriculum was obsolete.

4

The report highlights obsolete safety standards.

5

We must update our obsolete infrastructure.

6

She studied obsolete languages for her degree.

7

The invention made manual labor obsolete.

8

They discarded the obsolete files.

1

The theory has been rendered obsolete by new research.

2

Planned obsolescence is a controversial business strategy.

3

The author critiques the obsolete values of the era.

4

His arguments felt obsolete in the modern debate.

5

The museum displays obsolete farming tools.

6

She felt her training had become obsolete.

7

The political system was viewed as obsolete.

8

They replaced the obsolete software architecture.

1

The archaic syntax makes the text practically obsolete to modern readers.

2

He lamented how quickly the digital landscape makes hardware obsolete.

3

The cultural practices were deemed obsolete by the younger generation.

4

The firm struggled to pivot away from its obsolete business model.

5

The transition from analog to digital made the equipment obsolete.

6

Societal shifts can make once-cherished traditions obsolete.

7

The engine design is now technologically obsolete.

8

The document contains obsolete legal terminology.

Synonyms

outdated outmoded archaic defunct superseded antiquated

Antonyms

Common Collocations

become obsolete
render obsolete
technologically obsolete
completely obsolete
obsolete technology
obsolete equipment
obsolete practice
obsolete system
obsolete methods
obsolete design

Idioms & Expressions

"go the way of the dinosaur"

to become extinct or obsolete

Typewriters have gone the way of the dinosaur.

casual

"a relic of the past"

something old and no longer useful

That machine is just a relic of the past.

neutral

"past its prime"

no longer at its best or useful

The car is a bit past its prime.

casual

"on the way out"

becoming less popular or obsolete

Cash is on the way out.

casual

"yesterday's news"

no longer relevant

That trend is yesterday's news.

casual

Easily Confused

obsolete vs obsolescent

Looks similar

Obsolescent means 'becoming' obsolete.

The format is obsolescent.

obsolete vs outdated

Same meaning

Outdated is less formal.

The map is outdated.

obsolete vs archaic

Both mean old

Archaic is much older.

The language is archaic.

obsolete vs broken

Both imply 'no use'

Broken means not working; obsolete means outdated.

The screen is broken.

Sentence Patterns

A1

Subject + is + obsolete

The system is obsolete.

A2

Subject + became + obsolete

The tool became obsolete.

B2

Render + object + obsolete

The update rendered it obsolete.

B1

Consider + noun + obsolete

We consider this obsolete.

B2

Technologically + obsolete

It is technologically obsolete.

Word Family

Nouns

obsolescence The state of being obsolete

Verbs

obsolesce To become obsolete

Adjectives

obsolete Outdated

Related

obsolescent becoming obsolete

How to Use It

frequency

7

Formality Scale

Formal Neutral Academic

Common Mistakes

using as a verb become obsolete
Obsolete is an adjective, not a verb.
using for people old-fashioned or retired
Obsolete is for things, not people.
confusing with 'broken' obsolete
Broken means it doesn't work; obsolete means it's outdated.
saying 'an obsoletes' obsolete
It has no plural form.
using as a noun obsolescence
The noun form is obsolescence, not obsolete.

Tips

💡

Memory Palace

Place an old VCR in your hallway to represent 'obsolete'.

💡

Tech Talk

Use it when discussing old software.

🌍

Business Context

Use it to explain why a product failed.

💡

Adjective Rule

Always use it with a noun or after 'is/are'.

💡

Stress Check

Focus on the first syllable in US English.

💡

Don't verb it

Don't say 'I obsoleted my phone'.

💡

Latin Roots

It comes from 'to grow old'.

💡

Flashcards

Pair it with 'outdated' on one card.

💡

Formal Writing

Use it in essays about progress.

💡

Clear Speech

Enunciate the 't' at the end.

Memorize It

Mnemonic

OB-SO-LETE: Old Bits SO LEave Them Empty.

Visual Association

A dusty floppy disk in a trash can.

Word Web

Technology Progress Innovation Waste History

Challenge

List 3 things in your room that are becoming obsolete.

Word Origin

Latin

Original meaning: To grow old or fall into disuse

Cultural Context

None

Used heavily in business and tech journalism.

Planned obsolescence in consumer electronics documentaries

Practice in Real Life

Real-World Contexts

Tech Support

  • The driver is obsolete
  • Update the obsolete software
  • It is no longer supported

Business Strategy

  • Avoid obsolete models
  • Innovation prevents obsolescence
  • The product is obsolete

History Class

  • Obsolete weapons
  • Obsolete social norms
  • Historical context

Daily Life

  • My phone is obsolete
  • This format is obsolete
  • Get an upgrade

Conversation Starters

"What is one piece of technology that is now obsolete?"

"Do you think books will become obsolete?"

"Why do companies make products that become obsolete?"

"What is an obsolete habit you used to have?"

"Is it better to keep old things or buy new ones?"

Journal Prompts

Write about a device you loved that is now obsolete.

Discuss the pros and cons of planned obsolescence.

What is a tradition that has become obsolete?

Imagine a world where nothing ever becomes obsolete.

Frequently Asked Questions

8 questions

No, it is an adjective.

Obsolescence.

No, it sounds rude.

Yes, especially in tech.

Modern or current.

Not necessarily.

Yes, fairly formal.

Yes, but 'completely' is better.

Test Yourself

fill blank A1

My old phone is ___.

Correct! Not quite. Correct answer: obsolete

It is no longer used.

multiple choice A2

What does obsolete mean?

Correct! Not quite. Correct answer: Outdated

Outdated means no longer used.

true false B1

Can a person be obsolete?

Correct! Not quite. Correct answer: False

We use it for things/ideas.

match pairs B1

Word

Meaning

All matched!

Synonyms and antonyms.

sentence order B2

Tap words below to build the sentence
Correct! Not quite. Correct answer:

This technology is now obsolete.

Score: /5

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