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AIBU?

Share your dilemmas and get honest opinions from other Mumsnetters.

Do you class knackered as swearing?

264 replies

DisappointedD · 14/01/2026 19:36

I have always thought of it as a mild swear word. A word I wouldn’t want my younger children using but wouldn’t be too bothered by a teen (but not to their grandparents) type word.

There is a current radio ad using the word which made me think about it earlier. I was surprised when I heard it and didn’t think it was a word I’d heard used in ad’s before.

OP posts:
Obscurity · 14/01/2026 20:15

DisappointedD · 14/01/2026 19:39

Yes tired, but IMO not a particularly pleasant way of saying it. I do say it, but wouldn’t want my 5 year old saying it.

It just means exhausted! It’s not a swear word.

Simplelobsterhat · 14/01/2026 20:15

I've never thought of it as swearing and it was used commonly when I was growing up (and my mum would tell us off for saying bloody, so certainly didn't encourage swearing). I do remember though that one of my friends came into school as a teen saying another friend's strict dad told her off for saying it when he was giving them a lift. We were all mystified about why and 30 years later am none the wiser! I think this is the first time since then I've heard it described as swearing! I'd still think of it as slang but not swearing and certainly am not surprised to hear it anywhere.

TheFireHorse · 14/01/2026 20:16

Maybe it's to do with age, I'm 60 and it was definitely a word you were not allowed to say when I was young.

I still get a little shock when I hear young kids saying it :)

gemini0606 · 14/01/2026 20:17

In Scotland it most certainly is not a swear word or a rude word or even a slang word!, it’s a daily used word by well pretty much everyone from very young to very old

Simplelobsterhat · 14/01/2026 20:17

SoUncertain · 14/01/2026 20:10

Hahaha, DH and I have this argument! I think it's not a swear word, he thinks it is. He's from the Midlands if that means anything. He has asked me not to say it in front of DD, so I don't just to be considerate, but yeah, I feel it just means tired.

Interesting, the dad who told me friend off for using it was from the Midlands.

popcornandpotatoes · 14/01/2026 20:17

rereturner · 14/01/2026 19:42

My lovely dm used to tell me off for saying that. She also didn’t let me watch Michael Barrymore’s Strike It Lucky back in the day because it was ‘common’. So I didn’t pay much attention to ‘knackered’ being a swear word but I believe it may have sexual connotations *grabs smelling salts. In the real world I think it’s fine.

I got disciplined in primary school in the 1980’s for saying ‘crap’. Had no idea some people thought this was a swear word either 🤷‍♀️

Edited

Ha that reminds me of getting told off for using the word 'crappy' in a creative writing task in year 5. I had no idea it wasn't appropriate.

And no, knackered is not a swear word and is used regularly in our house and in front of DD. DH from northern Ireland me from South London and neither of us know of it as a swear word

Wynter25 · 14/01/2026 20:17

SoOriginal · 14/01/2026 19:49

Yes agreed on turd. That’s more a swear word in my opinion and I wouldn’t want my children to say it.

I couldnt care less if my kids said turd.

thaisweetchill · 14/01/2026 20:17

How odd, it’s just an emphasis on tired. Not a swear word whatsoever.

Dissappearedupmyownarse · 14/01/2026 20:18

DisappointedD · 14/01/2026 19:36

I have always thought of it as a mild swear word. A word I wouldn’t want my younger children using but wouldn’t be too bothered by a teen (but not to their grandparents) type word.

There is a current radio ad using the word which made me think about it earlier. I was surprised when I heard it and didn’t think it was a word I’d heard used in ad’s before.

The context in which it is used has changed over the years to it now having lost its original meaning of tired after sex because a man's 'knackers' being used; a bit like I feel completely bollockeds (sp)
I feel most swear words have lost their energy or intended imact over the year's because of over use. Take 'bugger' for example. Its actually a very vulgar term of phrase and I feel that because most dont understand its true meaning (anal rape to save anyone a google search), they think its mild compared to fuck off....

Mysticmaud · 14/01/2026 20:18

shellyleppard · 14/01/2026 19:39

I always thought it meant really tired/ broken. Not a swear word. But what about bugger?? Do others class this as a swear word

That is definitely a swear word.
Bugger is buggery a sex act and illegal until the end of the twentieth century.

SassyCow · 14/01/2026 20:18

I think I remember it being used less when I was younger but I do use it now but don't see it as swearing.

Biskieboo · 14/01/2026 20:18

I'm just wondering if anybody else has got a decent way through life (I'm 46), without ever having heard it said that 'knackered' specifically relates to being tired after sex? Hand on heart - this thread is the first time I've ever heard that!

Terrribletwos · 14/01/2026 20:19

DisappointedD · 14/01/2026 19:39

Yes tired, but IMO not a particularly pleasant way of saying it. I do say it, but wouldn’t want my 5 year old saying it.

Why though, it's just a word really as are all words. It maybe has some sort of connotation that you don't like?

HoppityBun · 14/01/2026 20:19

Some of these answers are bizarre.

Animals were taken to the knacker”s, or to the knackers yard, to be slaughtered when they were tired, worn out and of no further use. That’s what being knackered means.

I suppose people have less than less to do with animals and slaughtering, so the meaning gets lost.

FrodoBiggins · 14/01/2026 20:19

shellyleppard · 14/01/2026 19:39

I always thought it meant really tired/ broken. Not a swear word. But what about bugger?? Do others class this as a swear word

It's something to do with killing an animal when it's past its useful live. My mum would class it as a swear word and would have told me off for saying it as a child. Akin to "bloody".

Yes bugger as well is a minor swear word. Means fucking someone up the arse though so I can see more clearly why it's offensive

Simplelobsterhat · 14/01/2026 20:19

TheFireHorse · 14/01/2026 20:16

Maybe it's to do with age, I'm 60 and it was definitely a word you were not allowed to say when I was young.

I still get a little shock when I hear young kids saying it :)

It makes me laugh when young kids say it but that's because to me it sounds like something an older person would say, not quite right coming out of their mouths. I hadn't considered that might be because it's swearing though.

weathervane1 · 14/01/2026 20:20

Isn't it related to the business of a knackers yard? That's what we used to call the abattoir when I was young in the 70s and 80s. It's where tired and run-down animals went. It's the first time I've heard of a non-swear everyday word possibly being considered to be rude. It's usually the other way around where swear words lose their potency to offend over time.

Obscurity · 14/01/2026 20:20

DisappointedD · 14/01/2026 19:36

I have always thought of it as a mild swear word. A word I wouldn’t want my younger children using but wouldn’t be too bothered by a teen (but not to their grandparents) type word.

There is a current radio ad using the word which made me think about it earlier. I was surprised when I heard it and didn’t think it was a word I’d heard used in ad’s before.

Just found this online to answer your question:

Formerly considered a rude word – possibly implying that the subject was exhausted from having sex, perhaps due to conflation with knackers (“testicles”) – and still considered offensive by some (primarily older British people).

I will always laugh now when someone tells me they are knackered! And that’s me educated - I’ll not be using it again either.

TodaysThoughts · 14/01/2026 20:20

I don’t think it’s a word I’ve ever used but I don’t swear and I wouldn’t think it was a swear word 🤷‍♀️

DisappointedD · 14/01/2026 20:21

Biskieboo · 14/01/2026 20:18

I'm just wondering if anybody else has got a decent way through life (I'm 46), without ever having heard it said that 'knackered' specifically relates to being tired after sex? Hand on heart - this thread is the first time I've ever heard that!

I’ve never heard the connection before today, early 40s

OP posts:
Lovelynames123 · 14/01/2026 20:21

Definitely not a swear word, my dm swears maybe 2 or 3 times a year but will regularly say knackered!

WellMaybeYouShouldntBeLivingHeeeeeeee · 14/01/2026 20:21

Dissappearedupmyownarse · 14/01/2026 20:18

The context in which it is used has changed over the years to it now having lost its original meaning of tired after sex because a man's 'knackers' being used; a bit like I feel completely bollockeds (sp)
I feel most swear words have lost their energy or intended imact over the year's because of over use. Take 'bugger' for example. Its actually a very vulgar term of phrase and I feel that because most dont understand its true meaning (anal rape to save anyone a google search), they think its mild compared to fuck off....

That wasn’t its original meaning, though.

Also, nobody says ‘I’m bollocked’ to mean they are tired after sex.

MNLurker1345 · 14/01/2026 20:22

Apologies is this has already been posted. From Chat GPT -

“I’m knackered” comes from knackers’ yards.

The short version

A knacker was a person whose job was to collect animals (usually horses) that were old, injured, or dead and process them for glue, leather, or fat. These animals were sent to a knacker’s yard.”

Zanatdy · 14/01/2026 20:22

When younger I always thought same as OP as in its a mild swear word, but I don’t bat an eyelid when I hear it now.

Ddayishere · 14/01/2026 20:22

oilead · 14/01/2026 19:39

It used to mean a specific type of being tired. As in, after sex tired.

Sounds like you've been reading the Urban Dictionary!

It's slang but definitely not a swear word and I've heard all sorts of people use it in various situations all my life but never in a sexual context.