Apostrophes — Contractions & Misuse

You have almost certainly seen it — on a café chalkboard, a market sticker, an estate-agent's board, or half the Slack messages that land before nine: Apple's 50p, CD's for sale, Flat's available, Toilet's this way. Something about those little marks looks slightly off, and you know it does, but if someone asked you exactly why, could you say? Maybe you have been ticked off for dropping the apostrophe in dont, and then ticked off the other way for slipping one into a word where it had no business being. No wonder the thing feels like a trap.

Here's the thing. The apostrophe has a few clear jobs — genuinely just a few — and once you know which ones belong to this page and which ones live elsewhere, it stops being a mystery and turns back into what it actually is: a small, useful tool. This article owns three of those jobs. It teaches contractions (shortening words by joining them — don't, I'm, she'll, rock 'n' roll), a couple of special plurals (letters and decades), and the famous false friend, the greengrocer's apostrophe — the wrong one you spot on shop signs. Possessives like the cat's dinner or the client's file, and the notorious traps its/it's and whose/who's, live in another part of the library — and I'll send you there rather than muddle two lessons into one breath.

Let's be honest — the apostrophe has been asked to do too many jobs in public English, and people get shamed for mistakes that good editors make calmly and simply fix. Nobody's born knowing this. The good news is that the slice we're dealing with here is small and very manageable.

Before you read on, here's where we're heading. By the end of this article, you'll be able to: - Use apostrophes correctly in contractions (don't, I'm, she'll, rock 'n' roll). - Know when a plural of letters or a decade needs an apostrophe — and, far more often, when it doesn't. - Spot and fix the greengrocer's apostrophe (apple's when you only mean more than one apple). - Tell this rule-set apart from possessive apostrophes — and know exactly where to go for those.

Beginner (Foundation)

An apostrophe is the little raised mark ( ' ). In everyday writing you meet it first in one big job: the contraction.

A contraction is two words joined into one shorter word, with a letter or two left out. The apostrophe sits exactly where the missing letters used to be — that's the whole logic of the mark in this job. It's a tiny flag that says, "something was here, and now it isn't."

Look at these:

• do not → don't (the o of not has gone)
• I am → I'm (the a of am has gone)
• she will → she'll (the wi of will has gone)
• we are → we're
• they have → they've
• you are → you're
• it is / it has → it's (this one has a famous lookalike — hold that thought)
• cannot → can't
• will not → won't — a bit irregular in spelling, English being English, but the apostrophe still marks the shortening

The apostrophe always lands where the letters vanished. That's the rule, and it's a generous one: if you know which letters went missing, you know where the mark goes.

There's also a slightly stylish contraction you'll see on album covers and pick-and-mix stalls: rock 'n' roll. That 'n' isn't one word, it's the middle of three — rock and roll with and clipped down to a single letter. Both the a and the d of and have gone, so you get an apostrophe on each side. Both are correct. Fun, that one — but save it for informal writing.

You'll use contractions without thinking when you text a friend, fire off a Slack message, or scribble a note — I'm on my way, don't worry. In formal work, teachers and editors often prefer the full forms (do not instead of don't), and in a job application or a board paper many of us open the contractions back up to sound a touch more measured. But scolding you into believing contractions are "wrong English" is nonsense. They're genuinely useful English — the trick is matching the register to the room you're writing to.

And here's what the apostrophe does not do at this stage: it does not make ordinary words plural. One apple, two apples. One book, three books. One invoice, five invoices. If you're adding an s just to mean "more than one," leave the apostrophe in the toolbox.

Common Mistake: Writing dont, cant, im, or hes in a story, an essay, or an email. In standard written English, contractions always keep the apostrophe: don't, can't, I'm, he's.

Quick recap: - An apostrophe often marks the letters left out in a contraction. - The mark sits exactly where the letters vanished: do not → don't. - Everyday examples: don't, I'm, she'll, we're, they've, can't, won't. - Ordinary plurals (apples, books, invoices) take no apostrophe at all.

Intermediate (Development)

Once contractions feel solid, two muddy spots tend to appear. The first is people shoving apostrophes into perfectly ordinary plurals. The second is the small handful of cases — letters and decades — where style actually does let a little apostrophe in for the sake of clarity. Let's sort them out.

The plural that must not borrow an apostrophe

This is our celebrity error: the greengrocer's apostrophe, named after the classic shop-sign version — Banana's, Orange's, Special offer's. The writer means "more than one banana" and accidentally treats the plural s as though it needed decorating. And it's a bit unfair on greengrocers, honestly — you'll find exactly the same habit on flat ads, menu boards, PowerPoint titles, and the notice by the office kettle.

Wrong: The pupil's went outside. Right: The pupils went outside.

Wrong: I bought three pizza's. Right: I bought three pizzas.

Wrong: Invoice's due Friday. Right: Invoices due Friday.

Wrong: DVD's half price. Right: DVDs half price.

If the word simply means "more than one of these things," skip the apostrophe. The same goes for surnames: the Smiths are here, not the Smith's — and the Wilsons are visiting, not the Wilson's — unless you genuinely mean something belonging to one Smith or one Wilson, which a doormat rarely does.

Letters and little marks of clarity

Sometimes a bare s after a single letter looks messy, or downright confusing. So older school style — and plenty of working editors — still allow, and often prefer, an apostrophe when you make a single letter plural:

• Mind your p's and q's.
• There are four i's in Mississippi.
• She got all A's on her report.

The apostrophe there isn't "making it plural" in the ordinary sense — it's stopping the word from looking like a jumble. Without it, ps and qs reads oddly, and a lowercase is looks like the word is rather than two letter i's. The mark is doing a clarity job, nothing grander.

Decades, and that drifting apostrophe

Numbers and decades are a different matter. Modern British and American practice alike writes the plural of a decade without an apostrophe:

• the 1990s (the decade)
• the mid-80s (informal)
• the noughties — no apostrophe needed there either

You'll still see the 1990's online and in corporate slide decks, but that's the greengrocer habit drifting into dates. Prefer the 1990s. For marks in an exam, or for anything published, this is the version to use.

An apostrophe does reappear, though, when you drop the first digits off a year — because now letters (well, numbers) are genuinely omitted:

• the roaring '20s
• the summer of '96
• fashion of the '70s

Here the mark is doing contraction work, not plural work — it's standing in for the missing 19 or 20, exactly as it stands in for the missing o in don't.

What we're deliberately leaving alone

You will constantly meet the cat's whiskers, the girls' kitchen, the company's logo, children's coats, and the pair its versus it's. Those are real, important apostrophe jobs — and they belong to other articles in this library, because trying to learn possession in the same breath as don't and apple's is precisely how people end up permanently tangled. If your sentence means "belonging to," or you're choosing between its and it's, step off this page and follow the links to Pillar 2 (possessives and homophone traps). Keeping the two systems apart is a feature, not a dodge.

Common Mistake: Writing apple's, photo's, or friend's when you only mean more than one. If nothing has been shortened and nothing owns anything, drop the apostrophe: apples, photos, friends.

Pro-Tip: When you write a contraction, silently expand it. If don't opens back out to do not, you're fine. If a word ending in 's won't expand into two sensible English pieces — and it doesn't mean "belonging to" — the apostrophe almost certainly doesn't belong.

Quick recap: - Ordinary plurals take s or es only — no apostrophe. - Single-letter plurals often keep an apostrophe for clarity: p's and q's, A's. - Decades: prefer the 1990s; use '90s only when you've dropped the century digits. - Possessives and its/it's are a separate lesson — link out, don't mix the rules here.

Advanced (Mastery)

At this level you're no longer just dodging mistakes — you're choosing the form that looks deliberate, whether that's an A-level essay, a wedding speech, a covering letter, or a page of copy for a client.

Register: when contractions help, and when they fight you

Contractions pull a sentence closer to speech, and that's often exactly what you want — diary writing, a character's dialogue, an informal blog, a friendly email, a UX line like You're all set that would sound stiff as You are all set. But the same warmth can undercut a formal exam essay, a regulator's letter, or a board pack if every clause is vibing with can't, won't, shouldn't. It can even make serious prose feel lighter than you intended — we can't accept liability lands differently from we cannot accept liability. That's not snobbery; it's audience design. Formal piece, open the forms up (cannot, will not, should not); relaxed piece, contract away.

Double contractions live in real speech — shouldn't've, I'd've, couldn't've — and they're fine in dialogue that's chasing a natural voice. In formal work they look anarchic. One contracted cluster per phrase is plenty.

Stylised shortening: 'n', ma'am, and brand play

Informal and brand-style English loves a clipped bit — rock 'n' roll, pick 'n' mix, 'cause for because, ma'am, deliberately shortened shop names. The apostrophes there mark real omissions, so they're honest marks. Overdo them, though, and a paragraph starts to read like a logo rather than prose. The house-style answer is simple: allow the play on creative channels, keep it out of the annual report, and be consistent — consistency beats a long abstract rulebook every time.

Abbreviations, capitals, and grades — style, not moral law

Publishing practice has shifted here, and it's worth knowing the current lean. Most contemporary UK style gives capitalised initialisms a bare s for the plural: CVs, PDFs, MPs, NGOs, URLs, GCSEs. An apostrophe after capitals — CV's, PDF's — now reads as old-fashioned or greengrocer-adjacent, unless you actually mean possession (the PDF's metadata, which is Pillar 2 territory again).

Single letters and lowercase scraps still invite the clarifying apostrophe: cross the t's and dot the i's, too many if's and but's. Some editors prefer italics or quotation marks instead — too many "ifs" — and that's a perfectly good path too. Pick one and hold to it. Where apostrophes and quotation marks sit side by side, by the way, the mechanics of single versus double marks are set out in the Quotation Marks (UK/US) article — here you only need to remember that inside quotes an apostrophe still does its ordinary job.

Why the greengrocer's apostrophe thrives

Here's the kind bit. People who write carrot's aren't "bad at English" in some permanent, shameful way. They usually learned, somewhere along the line, that apostrophes go with s-words — and so every s starts attracting little flying commas, like jewellery on important words. The cure isn't a lecture; it's mechanical. Every time you type an 's, run three quick questions:

1. Did I leave letters out of a longer phrase? (a contraction)
2. Am I pluralising a lone letter that's hard to read without help? (p's, i's)
3. Am I marking possession? — and if yes, switch to the possessive article, not this one.

If all three answers are no, you want a bare s. That's the whole diagnosis.

Common Mistake: Writing the 1990's or the 2000's in essays, decks, and anniversary copy, on the strength of that floating-apostrophe habit. Prefer the 1990s, the 2000s. Reserve the apostrophe for forms like the '90s when you deliberately clip the century.

Pro-Tip: Proofread your apostrophes outwards. Search the document for every ' and expand each hit. Contractions that expand sensibly can stay if the tone allows. Ornamental 's plurals get deleted. Anything that turns out to mean ownership gets checked against the Pillar 2 possessive rules. Ten minutes, far fewer public wobbles.

Quick recap: - Contractions = spoken warmth; full forms = formal polish. Match them to the reader. - Stylised 'n' and dialogue shortenings are fine in the right register, jarring in the wrong one. - Capitalised initialisms now default to a bare s (PDFs, CVs); lone letters often keep the apostrophe (t's, i's). - Decade plurals: 1990s; clipped years: '96, '70s. - Every greengrocer 's is a prompt to ask: shortened? letter-clarifier? belonging? If none — drop it.

A quick UK / US note

The contraction and greengrocer rules are shared across British and American English — there's no grammatical fork here to worry about. The master is written in UK spelling; only cosmetic differences turn up elsewhere on the site, like colour [US: color] and organised [US: organized], and none of them touch the apostrophe. A minority of older US styles still print the 1990's, but modern newsrooms and book houses on both sides of the Atlantic lean hard towards the 1990s.

Key Takeaways

• In this article, apostrophes mark missing letters in contractions (don't, I'm, she'll, rock 'n' roll) and, sometimes, add clarity to letter plurals (p's and q's).
• Ordinary plurals — more than one of something — take no apostrophe: apples, books, invoices, CVs, DVDs.
• Prefer the 1990s for a decade; use '90s only when you've dropped the century digits.
• The greengrocer's apostrophe is a wrong apostrophe stuck onto a simple plural — apple's for apples. If nothing's shortened and nothing's owned, delete it.
• Possessive apostrophes (the cat's tail, the girls' kitchen, children's coats) and the its/it's and whose/who's traps live in Pillar 2 — link to them, don't rebuild them.

Check Your Understanding

1. Rewrite correctly if needed: Dont forget your coat's.

2. Which is preferred for the decade: the 1980's or the 1980s?

3. Turn these into contractions: she will; we are; cannot; they have.

4. Correct or leave: There are four i's in the word Mississippi.

5. A café board reads Sandwich's £4, and the stall sells plenty of them. In one sentence, explain why the apostrophe is unhelpful — and give the fix.

Internal Links

• Grammar Hub — the Pillar 6 overview and how the punctuation articles fit together.
• Pillar 2 · H1.4 — Possessive apostrophes (cat's / cats' / children's).
• Pillar 2 · H2.4 — Homophone traps (its/it's, whose/who's).
• Quotation Marks (UK/US) — dialogue, titles, and where apostrophes and speech marks sit side by side.