Apostrophes — Contractions & Misuse

The apostrophe (') has a reputation for being tricky, and you have probably seen it go wrong on shop signs, menus and posters all over town. But here is the good news: it really only does two jobs. Just two. Learn those two jobs, plus the one big mistake to avoid, and you have got it sorted — while plenty of adults are still guessing. The reason people tie themselves in knots is that they have never had the two jobs laid out plainly. So let us do exactly that, one at a time, with a simple test you can use whenever you are unsure.

Job 1: missing letters (contractions)

An apostrophe shows where letters have been squished out when two words are joined into one shorter word:

• do not → don't (the o of "not" is gone)
• it is → it**'s** · cannot → can't · I am → I**'m** · they are → they**'re**

The apostrophe stands exactly where the missing letters used to be. That is the whole logic of this job — it is a little flag that says, "something was here, and now it is gone." So if you know which letters have vanished, you know exactly where the apostrophe goes. In do not → don't, the o disappears, so the apostrophe drops straight into its place. A few more you will use all the time: she will → she'll, we are → we're, they have → they've, will not → won't. That last one is a bit odd in its spelling, English being English, but the apostrophe is still just marking the shortening.

Job 2: belonging (possession)

The apostrophe's second job is to show that something belongs to someone. You add an apostrophe and an s:

Sam**'s** bag (the bag belonging to Sam) the dog**'s** lead · my friend**'s** house

For a plural word that already ends in s, the apostrophe goes after that s: the players*'** kit* (the kit belonging to all the players). The idea is the same — the apostrophe is showing ownership — but you do not add a second s when the word already has one for the plural. So it is the girls' changing room when you mean the room belonging to all the girls.

The one test that sorts everything out

Before you ever add an apostrophe, stop and ask yourself two quick questions: Is a letter missing? and Does something belong to someone? If the answer to either is yes, an apostrophe belongs. If the answer to both is no, leave the apostrophe out completely. That is the whole diagnosis. Almost every apostrophe mistake in the world comes from adding one when the answer to both questions was actually no — which brings us neatly to the big mistake.

Watch out — the greengrocer's apostrophe

The biggest mistake of all is adding an apostrophe to an ordinary plural — a word that just means "more than one." Plurals need no apostrophe whatsoever:

• ✗ apple's for sale → ✓ apples for sale (just lots of apples — nothing is missing, nothing belongs)
• ✗ We saw three dog's. → ✓ We saw three dogs.
• ✗ Fresh banana's, only £1! → ✓ Fresh bananas, only £1!

This slip is nicknamed the "greengrocer's apostrophe" because you spot it on fruit-and-veg shop signs everywhere — Banana's, Orange's, Special offer's. It happens because people somehow learn that apostrophes go with words ending in s, so every s starts attracting a little flying comma. But run the test: in apples for sale, no letter is missing and nothing belongs to anyone — you just mean more than one apple. So the apostrophe has no business being there. Whenever you are about to pop an apostrophe before an s, pause and check: missing letter, or belonging? If it is neither, it is just a plural, and it stays plain.

A trap worth knowing: its and it's

Here is one that catches even careful writers, so it is worth a special mention. The word it's with an apostrophe always means it is or it has — it is a contraction, Job 1. The word its with no apostrophe means belonging to it, like his or her. This one breaks the usual "belonging gets an apostrophe" pattern, which is exactly why people get it wrong. The trick is simple: if you can swap in it is and the sentence still makes sense, use it's with the apostrophe. If you cannot, use its with no apostrophe.

• It's raining. → It is raining. — the swap works, so use the apostrophe.
• The dog wagged its tail. → The dog wagged it is tail? — nonsense, so no apostrophe.

Why it matters

You might wonder why one tiny mark deserves so much attention. The reason is that apostrophes are one of the first things a reader notices, and getting them wrong stands out — a stray apostrophe on a plural looks careless even when the rest of your writing is excellent. Getting them right, on the other hand, quietly signals that you know what you are doing. In an exam, markers actively check for apostrophes, because they show whether you understand the difference between shortening a word, showing belonging, and simply making something plural. And best of all, this is a skill you keep for life: the two-question test — missing letter? or belonging? — will steer you correctly in everything from a homework essay to a text message. Two jobs, one test, and a mistake you now know how to dodge.

Quick check

Add or remove apostrophes as needed:

1. Its raining, so bring the dogs lead.
2. Fresh banana's, only £1!
3. That book is Sarahs.
4. We bought three pizza's for the party.
5. The players kit was muddy after the match. (the kit belonging to all the players)

Answers

1. It's raining (it is — missing letter), so bring the dog's lead (belonging).
2. Fresh bananas (just a plural — no apostrophe!)
3. That book is Sarah's (belonging to Sarah).
4. We bought three pizzas (just a plural — nothing missing, nothing owned).
5. The players' kit (belonging to all the players, so the apostrophe goes after the s).

Where next

• Its and It's, Their/There, Your/You're — the apostrophe homophones that trip everyone up.
• Showing Possession with Apostrophes — the belonging job in full.
• Full Stops, Question Marks and Exclamation Marks — the marks that end a sentence.