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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:
WellMaybeYouShouldntBeLivingHeeeeeeee · 14/01/2026 19:54

Moonface318 · 14/01/2026 19:53

My Mum would tell me off for using it when I was a kid. It means you're tired from having sex.

It really doesn’t seem to mean that to a majority of people.

BashfulClam · 14/01/2026 19:55

I have never thought it was a swear word, vulgar or unpleasant it’s just an everyday word to me like shoe or door or bus.

LoveWine123 · 14/01/2026 19:55

Never saw it as a swear word but then English is not my first language so there’s that. Now that I think about it, I’ve only ever seen it used on mumsnet and not in real life.

DisappointedD · 14/01/2026 19:55

To clarity, I am not in the slightest offended. I don’t have any issue with swearing at all. Was just surprised to hear it on the radio and the person I was with agreed with the majority here that it’s not a swear word.

OP posts:
Bikergran · 14/01/2026 19:55

"Knackers" meaning testicles, could be thought of as a mild swear word.

"Knackered" meaning worn out, as in fit for the knacker's yard (where a knacker, in this context, means a dealer in dead animals, someone who would dispose of horses in days gone by) is a colloquial expression rather than a swear word.

Tigerbalmshark · 14/01/2026 19:56

oilead · 14/01/2026 19:39

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

No it didn’t! It comes from the knacker’s yard, where old worm out horses are shot and turned into dog meat (historically).

Do some people think the word comes from testicles? 🤣

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.

LVhandbagsatdawn · 14/01/2026 19:57

My dad used to tell me off for saying it! I don't personally consider it a swear word but clearly some people do.

AnnaQuayInTheUk · 14/01/2026 19:57

I seem to remember when I was a child there was a big fuss because Prince Charles said it, possibly after a polo match. I'd never heard it before so assumed it was a "bad" word but I use it all the time and don't think of it as a swear word.

That said. I wouldn't say it in a work meeting.

Barrellturn · 14/01/2026 19:58

I use it. I associate it with the knackers yard i.e., I feel like a very old horse that needs to be made into glue at this point in the day.

Namechange6578 · 14/01/2026 19:59

My nearly 5 year old says Arse sometimes 🙈
That's probably worse 😂

Love2read12 · 14/01/2026 19:59

Funny I don’t allow my children to use it and I always say because it’s a swear word. That only came about as when i was younger I said it in class and got into trouble. My parents gave me a lecture (I am 46) about its a word that people use after sex. So they don’t want me to say this as a young girl 🤣 I’d have been maybe 15 when I got into trouble from the teacher. It always stuck with me 🤣

yeesh · 14/01/2026 19:59

I think it’s like crap, not really swearing but not for children or formal conversation.

nocoolnamesleft · 14/01/2026 20:00

It's informal, but not swearing. It means exhausted, or worn out through overwork. Like a horse fit only for the knacker's yard.

Bigknivesmakemenervous · 14/01/2026 20:01

When I was about ten my friend told me it meant tired after sex and I've believed it ever since. I am an older British person 😂

From Wiktionary:
Usage notes
edit

  • 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).

View source for knackered - Wiktionary, the free dictionary

https://en.wiktionary.org/w/index.php?title=knackered&action=edit&section=5

Liftedmeup · 14/01/2026 20:01

I do say it - I’m northern and it does mean tired to me - but I’m aware it’s seen as uncouth elsewhere or in different times.

CrapNewYear · 14/01/2026 20:02

When I say I'm knackered I'm truly shattered. As in ready for the knackers yard.

SweetHydrangea · 14/01/2026 20:02

Are you joking? A swear word to me is fuck, cunt, shit, motherfucker. I have never heard of the word knackered being referred to a swear word. But then again people consider dam to be a swear word as well, so who knows.

Cocomelon67 · 14/01/2026 20:02

It used to mean tired from sex. It doesn’t have that connotation anymore. Very few people even know it once meant that. I don’t think it’s a swear word. It probably was 50 years ago.

GetyourheadoutoftheovenIris · 14/01/2026 20:02

I don’t like it and don’t use it or expect my dc to use it but wouldn’t consider it swearing.

I do love swearing though.

EmeraldShamrock000 · 14/01/2026 20:03

It was used to describe feeling really tired, now it is a slur against the travelling community so it isn’t socially acceptable, similarly to chav, yet people still use them frequently.
My mistake it isn’t the full word. 🥶 just the short version with a very different meaning.

Liftedmeup · 14/01/2026 20:04

SweetHydrangea · 14/01/2026 20:02

Are you joking? A swear word to me is fuck, cunt, shit, motherfucker. I have never heard of the word knackered being referred to a swear word. But then again people consider dam to be a swear word as well, so who knows.

Damn is definitely a swear word. It’s blasphemy traditionally

SquigglePigs · 14/01/2026 20:04

I file it under "not really swearing but not exactly a nice word". I wouldn't want my 7 yr old using it but I wouldn't blink if a teen did or I heard it in a work setting etc.

Songandance · 14/01/2026 20:05

I was told not to say it as a child as I was told it meant tired after sex.

That said I was also told that twat meant a pregnant fairy.🤣😂

WellMaybeYouShouldntBeLivingHeeeeeeee · 14/01/2026 20:05

Tigerbalmshark · 14/01/2026 19:56

No it didn’t! It comes from the knacker’s yard, where old worm out horses are shot and turned into dog meat (historically).

Do some people think the word comes from testicles? 🤣

I really think this must be it. People who don’t know what the knacker’s yard is have misunderstood the expression as referring to post-sex exhaustion (although that is a pretty awkward linguistic stretch, tbh). And then because of general British prudishness and overexcitement, that misunderstanding has become established — not enough to overtake the original meaning, but enough to get little pockets of people all worked up about a completely innocent word.