Quick Answer
Knackered is an informal British English adjective that means extremely tired, exhausted, or completely worn out. It is commonly used after hard work, exercise, travel, studying, or any activity that leaves someone physically or mentally drained.
Examples:
- I’m absolutely knackered after working a 12-hour shift.
- We walked around London all day and were completely knackered.
Besides describing people, knackered can also describe something that is broken, worn out, or no longer working properly.
Pronunciation
Word: Knackered
Pronunciation (IPA): /ˈnækərd/
Sounds like: NACK-erd
Part of Speech: Adjective
What Does Knackered Mean?
The word knackered means extremely tired or exhausted.
It expresses a stronger feeling than simply saying tired. If someone is knackered, they usually have very little energy left.
Examples
- I’m knackered after cleaning the entire house.
- She’s knackered because she stayed up studying all night.
- They looked absolutely knackered after the marathon.
Can Knackered Mean Broken?
Yes.
In British English, knackered can also describe something that is damaged, worn out, or no longer works properly.
Examples
- My laptop is completely knackered.
- The washing machine is knackered.
- Those old boots are knackered after years of hiking.
The meaning depends on the context.
Meaning Comparison Table
| Meaning | Explanation | Example |
|---|---|---|
| Extremely tired | Physically exhausted | I’m knackered after work. |
| Mentally drained | Emotionally exhausted | That meeting left me knackered. |
| Broken | No longer working | My phone is knackered. |
| Worn out | Old or damaged | These shoes are knackered. |
Is Knackered an Adjective?
Yes.
Knackered is an adjective because it describes a person or thing.
Correct:
- I am knackered.
- She feels knackered.
- The engine is knackered.
Incorrect:
- I knackered.
- He is knackering today.
Origin of the Word
The word comes from the older English word knacker.
Historically, a knacker was someone who dealt with old or worn out farm animals that were no longer fit for work.
Over time, people began using knackered to describe anyone or anything that was completely worn out.
Today, the historical meaning is rarely considered. Most native speakers simply understand it to mean very tired or worn out.
British vs American English
| Country | Usage |
|---|---|
| United Kingdom | Very common |
| Ireland | Common |
| Australia | Common |
| New Zealand | Common |
| United States | Less common but widely understood |
| Canada | Occasionally used |
Americans are more likely to say:
- Exhausted
- Worn out
- Beat
- Drained
Knackered vs Similar Words
| Word | Meaning | Formality |
|---|---|---|
| Sleepy | Ready to sleep | Neutral |
| Tired | Low energy | Neutral |
| Worn out | Very tired | Neutral |
| Exhausted | Extremely tired | Formal and Informal |
| Knackered | Extremely exhausted | Informal British English |
| Burned out | Long-term exhaustion | Neutral |
Tiredness Scale
Sleepy
↓
Tired
↓
Worn Out
↓
Exhausted
↓
Knackered
Common Collocations
Native speakers often say:
- Absolutely knackered
- Completely knackered
- Totally knackered
- Feeling knackered
- Look knackered
- Be knackered
- Completely knackered after work
- Knackered from travelling
Everyday Examples
After Work
- I’m absolutely knackered after today’s meetings.
- Everyone was knackered by the end of the project.
After Exercise
- That workout completely knackered me.
- We were knackered after climbing the mountain.
After Travelling
- The overnight flight left us knackered.
- I’m still knackered from the long drive.
After Studying
- She was knackered after revising for her exams.
Parenting
- Looking after twins all weekend left us knackered.
Conversation Examples
At Work
Sarah: How was your day?
Tom: I’m absolutely knackered. I need to sleep.
After the Gym
Alex: Fancy another workout?
Ben: No chance. I’m completely knackered.
After Travelling
Emma: Did you enjoy the trip?
Jake: Yes, but I’m knackered after all that travelling.
Synonyms of Knackered
Some common alternatives include:
- Exhausted
- Worn out
- Drained
- Beat
- Fatigued
- Weary
- Shattered
- Done in
- Dead tired
- Dog tired
- Burned out
- Bushed
Antonyms
The opposite of knackered includes:
- Energetic
- Rested
- Refreshed
- Active
- Alert
- Lively
- Wide awake
When Should You Use Knackered?
People commonly use the word after:
- Working long hours
- Travelling
- Running or exercising
- Studying
- Parenting
- Playing sports
- Home renovations
- Long meetings
- Gardening
- Moving house
Common Mistakes
Mistake 1
❌ I’m a little sleepy, so I’m knackered.
✅ I’ve been working all day, so I’m knackered.
Mistake 2
❌ I knackered.
✅ I am knackered.
Mistake 3
❌ Employees were knackered. (Formal report)
✅ Employees were exhausted.
Mistake 4
❌ I’m knackered today morning.
✅ I’m knackered this morning.
Is Knackered Offensive?
No.
Most English speakers do not consider knackered offensive.
It is simply an informal slang word.
However, it is better to avoid it in:
- Business reports
- Academic writing
- Legal documents
- Professional emails
Instead, use:
- Exhausted
- Fatigued
- Very tired
- Worn out
Is Knackered More Common in British English?
Yes.
It is one of the most common British slang words for being extremely tired.
You will frequently hear it in:
- British TV shows
- UK podcasts
- Football interviews
- Everyday conversations
- Social media
- Online gaming communities
Frequently Asked Questions
What does knackered mean in slang?
It means extremely tired, exhausted, or worn out.
Is knackered a British word?
Yes. It is primarily used in British English but is recognised in many other English-speaking countries.
Can knackered describe objects?
Yes. It can mean broken, damaged, or worn out.
Is knackered stronger than tired?
Yes. It suggests a much greater level of exhaustion.
Can Americans use knackered?
Yes. Although Americans usually say exhausted, beat, or worn out, many people understand knackered because of British media.
Is knackered rude?
No. It is informal but generally not considered rude.
Can I use knackered in formal writing?
It is better to avoid it in formal writing and use exhausted or fatigued instead.
What is the American equivalent of knackered?
The closest alternatives are:
- Exhausted
- Worn out
- Beat
- Completely drained
Key Takeaways
- Knackered is an informal British English adjective.
- It means extremely tired or exhausted.
- It can also describe something that is broken or worn out.
- It is stronger than simply saying tired.
- It is widely used in the UK, Australia, Ireland, and New Zealand.
- In formal writing, words like exhausted or fatigued are usually more appropriate.
Conclusion
Knackered is one of the most widely used informal words in British English for expressing extreme tiredness. Whether you’ve finished a demanding day at work, completed a challenging workout, travelled for hours, or spent the weekend chasing energetic children, saying you’re knackered tells others that you’re completely worn out.
The word can also describe broken or worn out objects, making it a versatile piece of everyday British vocabulary. Learning how and when to use knackered will help you better understand British conversations, television programmes, films, books, and social media while expanding your English vocabulary naturally.
