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Could have versus could of

164 replies

Trendyname · 09/09/2025 12:40

Could have done.✔️
could of done. Incorrect

Explanation:

Could = ability in past. Being able to in a time which is past now.

Could have = something that was possible in past.

have is followed by past participle

Past participle is what we write after have in sentences. Eg done, eaten, bought.

could have + finished
could have + gone
could have + written
could have + done

Easier way to remember is:

The ‘have done’ after could is similar to when we use ‘have done’ in a sentence like
‘I have done all my tasks for today’
or ‘ I have finished all my tasks for today’

You ‘could have picked’ some vegetables on your way home.

We never say ‘ I of done my tasks for today’ or ‘ I of finished my work’

‘Would have’ has a similar structure in the sentence, the meaning is different. I think we all know the meaning but some of us use structure wrongly.

Would have ✔️

Would of incorrect

Maybe I am AIBU to post here, but I see so many people use it incorrectly here. English is my second language, so if you find any mistakes, please go ahead and correct.

OP posts:
Jackiepumpkinhead · 09/09/2025 17:35

I’ve noticed a lot of people write ‘noone’ instead of ‘no one’, I find that really odd. My phone doesn’t recognise it and wants to correct the spelling.

I also have a very intelligent manager at work who regularly asks me to arrange meetings with ‘Graham and I’. I’ve told him it’s wrong but he thinks using ‘I’ is formal and ‘me’ is informal. 🤷🏻‍♀️

CoffeenWalnut · 09/09/2025 14:38

I agree that part of the problem is that fewer people read books, so they are less exposed to the correct form of writing. Furthermore, due to the increase in the use of the written word because of text messages, email and SM posting (whereas previous generations would have used the telephone or face to face communication)young people are being more exposed to such errors...... and are being judged negatively by potential future employers and anyone else who did learn to use the language correctly. There's nothing wrong with using non standard forms if you realise you're doing it and know when it is inappropriate to use them.

TheCurious0range · 09/09/2025 14:23

I genuinely believe fewer people read books and mostly read online, where the content is often hastily thrown together and not well edited (ahem local news). There's no gentle challenge of reading things written correctly, to shape your own writing (like the literacy version of pro-social modelling). Direct challenge is always harder for people to hear.

Bbq1 · 09/09/2025 14:16

Zodiacrobat · 09/09/2025 12:43

Yes the mistake has risen, I believe, from people hearing “could’ve” the spoken contraction of could have as “could of” and then writing it incorrectly.

I fear we are fighting a losing battle however as “could of” seems ubiquitous now.

This. Plus, they are probably non readers so don't see it written down regularly

FontainesDH · 09/09/2025 14:13

Arrghhh spelling, not spalling. The irony.

FontainesDH · 09/09/2025 14:12

When I was a primary teacher, I used to correct the incorrect use of 'of' whenever it arose in a child's writing (Y5/6). After a book scrutiny, I was told to let it go as it was disheartening the children. It was even argued by some colleagues that it was a natural progression of language and not that important.

Our weekly newsletter, written by either the Head or Deputy, used to contain many spalling and grammar errors including 'could of', 'would of' and I was greatly disheartened by that.

smallglassbottle · 09/09/2025 14:10

People are writing 'wondering around' instead of 'wandering around'. Do they really believe they're using the right word?

I've just encountered another 'alot' as well.

I don't think people are reading books very much now, as this can improve spelling and grammar.

Trendyname · 09/09/2025 14:06

beetr00 · 09/09/2025 13:45

Should have put this on https://www.mumsnet.com/talk/pedants_corner @Trendyname 😉

I am afraid now ;)

OP posts:
Trendyname · 09/09/2025 14:05

FuzzyPuffling · 09/09/2025 12:42

That's an extremely long and complicated explanation of "never use "could of"".

Maybe. I tried my best to simplify but I guess it’s not good. Sorry

OP posts:
Fruitchipnnut · 09/09/2025 13:54

It wasn't until I got to sixth form that this was pointed out to me after 12 years of full time state education in the UK.

Off topic but I've had to teach myself many things that I should have been taught in school including budgeting and financial planning.

We home educated our own children and I firmly believe they have reached adulthood with a better education than I had.

Needless to say, they won't get caught out using 'could of', 'should of', 'would of' like I did!!

outerspacepotato · 09/09/2025 13:46

Coulda, woulda, shoulda.

beetr00 · 09/09/2025 13:45

Should have put this on https://www.mumsnet.com/talk/pedants_corner @Trendyname 😉

Ponoka7 · 09/09/2025 13:44

ACatNamedRobin · 09/09/2025 12:41

Sadly the people who use "could of" won't be able to grasp any of that...

Well, no. There's no proper sentence structure, bad punctuation, as well as it being really badly written.

Meanwhile, unless you have very, very, very poor comprehension, 'could of', is easily understood. I like dialects, some people write as they speak. I agree that it shouldn't happen in official/legal correspondence, but on social media etc? That's fine.

Luluissleeping · 09/09/2025 13:43

Ditto alot, abit, and aswell.

marshmallowfinder · 09/09/2025 13:43

Thepeopleversuswork · 09/09/2025 12:44

What's the AIBU though?

You know you're correct and they are wrong.

Anyone writing "could of" has had a substandard education or has a neurodiversity or learning difficulty such as dyslexia.

What do you get out of hitting them over the head with a grammar tract and why should they listen to you telling them how much cleverer you are?

They might actually realise they've been saying and writing it incorrectly and stop doing it. To save them from looking and sounding like a dick in the future? It's nothing to do with the poster trying to show their 'intelligence.' It's basic English and pretty easy to change when it's explained to you.

smallpinecone · 09/09/2025 13:40

ThejoyofNC · 09/09/2025 13:36

Why do you even care?

My DH would 100% use "could of". I know it's wrong but it makes absolutely 0 difference to our lives. If I corrected him he'd probably say "being educated doesn't pay my bills".

He wasn't educated past primary school and earns enough money for us to live comfortably on a single income. He doesn't know fancy long words and doesn't know when and where to use punctuation and it doesn't affect us one bit.

It really annoys me when people feel superior over others because they have good literacy skills. I've found it's because they're usually lacking elsewhere, often in the personality department.

Why do people get so personal and defensive as though it’s a character assassination? It’s not. People are allowed to be annoyed by poor spelling and grammar. It’s irritating to read.

VeryQuaintIrene · 09/09/2025 13:38

Fair enough but it just doesn't seem that hard never to use "could of" because there is no nuance whatsoever about whether it's right or not, and it's not exactly a complicated rule.

ThejoyofNC · 09/09/2025 13:36

Why do you even care?

My DH would 100% use "could of". I know it's wrong but it makes absolutely 0 difference to our lives. If I corrected him he'd probably say "being educated doesn't pay my bills".

He wasn't educated past primary school and earns enough money for us to live comfortably on a single income. He doesn't know fancy long words and doesn't know when and where to use punctuation and it doesn't affect us one bit.

It really annoys me when people feel superior over others because they have good literacy skills. I've found it's because they're usually lacking elsewhere, often in the personality department.

CoffeeCantata · 09/09/2025 13:35

What they are saying is ‘could’ve’, but good luck trying to get that over!

I was an English teacher and I get that language is used differently in different contexts and by different people. I’m not bothered by incorrect usages in everyday speech by members of the public but I wince when the BBC or serious journalists get things wrong.

The BBC News site today says someone ‘was sat’ at a table….

Aaarrrggghh…use the present participle- it's ‘ was SITTING’. If they really were sat at a table someone must have sat them there by manhandling them. Newsflash: different words mean different things - use the right one to be understood.

Get it right, elite professional writers!

JudgeJ · 09/09/2025 13:24

PennywisePoundFoolish · 09/09/2025 12:44

I remember being corrected on that when I was in Yr11. I'd used of instead of have repeatedly in a history essay and my teacher corrected every one. I genuinely had no idea. I'm average intelligence, not dyslexic.

20+ years ago a young excellent Maths teacher joined my Department, when we were a 3.30 moan generally another teacher commented about 'could of' and she was surprised, not realising that it was wrong!

JudgeJ · 09/09/2025 13:20

ACatNamedRobin · 09/09/2025 12:41

Sadly the people who use "could of" won't be able to grasp any of that...

I would be impressed that they can spell 'could' if they had such poor grammar!

PaddlingSwan · 09/09/2025 13:08

People forget that English, like many other languages, has a spoken and written version.
Could've being the spoken version, but written incorrectly as the person writing is not aware of the contraction?

chunkybear · 09/09/2025 13:02

HelpMeGetThrough · 09/09/2025 12:47

It’s wasted OP.

I’ve just had an email from a Director with “should of” and “could of” in it.

It didn’t have a “pacifically” but it wouldn’t have surprised me.

Bliney, I wonder if they were busy buying a chesto draws, a plumb tree or marshmellows so got distracted

ShesTheAlbatross · 09/09/2025 12:58

It’s just people not thinking about the words they’re writing.

If you wrote “I have gone to that shop, I should of gone to that shop instead” does it not seem obvious that “of” is wrong? There’s no need to switch the “have”
None of the people who use it would ever say “I of done that”, they’d all write “I have done that”, but when they add should/could/would to the sentence, they switch.

Also I’ve had to go back and undo my phone correcting “should of” to “should have” three times while writing this (and now six more times for this current sentence). It’s actually quite difficult to force my phone to get it wrong.

LeaderBee · 09/09/2025 12:49

KpopDemon · 09/09/2025 12:47

It’s because the contraction of “could’ve have” to “could’ve” sounds like “could have”.

Same with might’ve and would’ve but less common so it hasn’t become such a major grammar error.

See Also: Americans saying "Do" for, Dew, Due and Do

"My check is do to come through by the end of the week."
"The do on the flowers glistened in the morning sunlight"