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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:
DuckbilledSplatterPuff · 14/01/2026 20:23

DappledThings · 14/01/2026 19:43

First time I've ever heard anyone connects it with sex.

news to me too.

Always thought it described just being so tired out that you were only fit for the knackers yard. One of our teachers used to say "Would you say that to The Queen?" Probably not as she was very fond of horses.

"I'm cream crackered Ma'am." would probably be acceptable I guess.

FrodoBiggins · 14/01/2026 20:24

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!

Never heard that. I've always known it to be rude in a mild way and to come from the knacker ie the person/ industry which kills and repurposes old useless animals.
Learned it from Animal Farm when Boxer (RIP Boxer) is taken away in the knackers van and sold for glue to buy whiskey for the pigs. #spoiler 😂

TheSmallAssassin · 14/01/2026 20:25

I love the way people are posting up definitions off the Internet as if that is somehow more authoritative than actual people who've spoken the language all their lives.

ChequerToRed · 14/01/2026 20:26

Knackered, as has been said, is from knacker’s yard where old and worn out horses were sent before going off for pet food and the glue factory. It has nothing to do with sex, I have no clue where that weird idea must have come from.
This all reminds me of my rather religious BIL and his wife, very down on swearing but will happily use ‘blimey’, ‘crikey’ and other oldskool exclamations without seemingly realising their blasphemous origins but won’t tolerate the robust, but once upon a time perfectly acceptable in polite company, Anglo Saxon and Middle English that’s evolved into many of our current swear words, and no, I haven’t told them because it amuses me.
I do wish people would look into the etymological roots of words before they get their knickers in a knot about them, though.

Liftedmeup · 14/01/2026 20:28

Yes, knackered has nothing to do with sex and never did. It relates to knacker’s yard.

MNLurker1345 · 14/01/2026 20:28

@DuckbilledSplatterPuff “I'm cream crackered….”, my SIL actually says this to me when he pops in for a cup of tea after a hard days work.

He considers me a bit prim, but I do like a bit of the cockney rhyming!

Didimum · 14/01/2026 20:28

When I was younger it was commonly accepted to mean tired from having sex. I don’t think it’s a swear word, but I wouldn’t want my kids using it for this reason - though I don’t think that meaning is widespread!

VillaOfReducedCircumstances · 14/01/2026 20:28

I actually feel in my heart 😄 that it’s a moderate swear word, but I know that not everyone does.

I always feel a bit shocked when I hear it. I wouldn’t want my teen to use it.

SilverPink · 14/01/2026 20:28

SPQRomanus · 14/01/2026 19:57

I think knackered isn't a swear word but it's vulgar and certainly shouldn't be used by children. I wouldn't use it in polite company. I'm in my sixties and understand it originally to mean exhausted as in after sex, so quite a rude word.

Bugger is definitely a swear word. Certainly not to be used by or in front of children. It's a horrible word, it means putting a penis in someone else's anus, so is pretty disgusting.

Sod is an abbreviation for sodomy, the same meaning as bugger, so again pretty rude. Children shouldn't be using it.

Crap/shit/turd are rude and children shouldn't hear or use.

I always think that any words you wouldn't use in a formal letter or essay type of thing or use in front of a class of children should be considered as rude.

You’d hate my house 😆

lazyarse123 · 14/01/2026 20:29

When i was growing up it was considered rude rather than swearing. I don't like hearing children say it.
I was surprised to hear Starmer saying it today and saying the country was screwed by the torys. Came across as uncouth and like a child that had just discovered the word fuck.

SoOriginal · 14/01/2026 20:30

Wynter25 · 14/01/2026 20:17

I couldnt care less if my kids said turd.

Edited

It’s funny isn’t it. We attach different meanings to words based on our lived experience. I’m in my 30s in the south and it was definitely considered rude growing up. But other words mentioned on this thread are just used in everyday language.

Bluelajay · 14/01/2026 20:30

Thingamebobwotsit · 14/01/2026 19:37

Where I am from (North East) it isn't a swear word and often used to describe someone as looking tired (ie you are concerned about how tired someone is) but I live further South now and it is definitely seen as an insult if not a swear word per se.

Learned this the hard way 🫣

I’ve lived down south my entire life and it’s never been a swear word where I am

PinkyFlamingo · 14/01/2026 20:30

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.

That doesn't make it a swear word though

Rituelec · 14/01/2026 20:31

oilead · 14/01/2026 19:39

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

Yeah I used to get told off for saying it.

FunMustard · 14/01/2026 20:31

oilead · 14/01/2026 19:39

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

This was a primary school rumour!

No it's not a swear word and I wouldn't care about a child saying it.

Bluelajay · 14/01/2026 20:31

Didimum · 14/01/2026 20:28

When I was younger it was commonly accepted to mean tired from having sex. I don’t think it’s a swear word, but I wouldn’t want my kids using it for this reason - though I don’t think that meaning is widespread!

Wow ive been using this my whole life and never knew this 😬

Queenoftartts · 14/01/2026 20:31

No it's not it's slang but not a swear word. Swear words are offensive I would say I'm knackered around DC than I'm fucked.

Twinkletwinkly · 14/01/2026 20:31

I worked alongside a nun who frequently used it . I’m sure she’d never heard that it meant tired after sex and I’d never heard of that connotation till this thread 🤷‍♀️

Magpiecomplex · 14/01/2026 20:32

I was told off at uni for using knackered, due to the apparent sex connotations. My husband also told me off for saying crud (as a noun), don't know why.

I still use both words.

MasterBeth · 14/01/2026 20:32

It has nothing to do with sex, I have no clue where that weird idea must have come from.

Etymology is one way of exploring language, but so is usage.

If a number of people tell you that they use/have used/have heard the use of knackered to mean "tired after sex", then the fact you don't know the origin of that meaning is irrelevant.

It does mean "tired after sex" if some people understand that meaning. That's all language is

FrodoBiggins · 14/01/2026 20:32

MNLurker1345 · 14/01/2026 20:28

@DuckbilledSplatterPuff “I'm cream crackered….”, my SIL actually says this to me when he pops in for a cup of tea after a hard days work.

He considers me a bit prim, but I do like a bit of the cockney rhyming!

If he were using proper CRS (where you drop the rhyming bit eg "have a butcher's" for butchers hook/look) he might say "I'm creamed" but... I can see why he doesn't😂

99bottlesofkombucha · 14/01/2026 20:33

oilead · 14/01/2026 19:39

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

It specifically came from taking worn out horses to the knackers, so your meaning is only one that’s arisen and not the main one. Thats like saying smoking a cigarette means you just had sex. Knackered isn’t a swear word.

DuckbilledSplatterPuff · 14/01/2026 20:33

I used to think the word Berk just meant the same as silly idiot but not as offensive, until I was told that it's the short form of Berkshire Hunt.

Bloodycrossstitch · 14/01/2026 20:34

It’s got bugger all to do with sex. A lame/ old horse is knackered/ sent to the knackers yard and that’s where it came from.

We got told off for saying it for the same reason we got told off for saying ‘naw’ or ‘wit’ instead of ‘no’ or ‘what’ as kids - it’s just not proper English. I think that generally isn’t considered to be such an issue by so many people now

MasterBeth · 14/01/2026 20:34

Liftedmeup · 14/01/2026 20:28

Yes, knackered has nothing to do with sex and never did. It relates to knacker’s yard.

Half a dozen people on here have proven you wrong on this thread