When using an apostrophe to mark a possessive case, it is vital to know whether the person or object doing the possessing is singular or plural.
The rules
editThe rules are simple:
- When the person or object doing the possessing is singular, you always add 's to denote that it is doing the possessing.
- Examples:
- A single man possessing a hat: The man's hat.
- The barking of a particular dog: That dog's incessant barking.
- The legs of a singular table: My table's legs.
- The waves of a single ocean: The ocean's waves.
- The labour performed within a given day: All in a day's work.
- Problems not possessed by anybody: Nobody's problems.
- Problems possessed by each other: Each other's problems.
- The evil plan of a single attorney-general: The attorney-general's evil plan.
- A list made by a single organisation: The F. B. I.'s most-wanted list.
- The heal of Achilles: Achilles's heel
- The rebellion led by Daniel Shays: Shays's Rebellion
- The staff of Moses: Moses's staff
- Pronounced: moseses staff
- The disciples of Jesus: Jesus's disciples
- Pronounced: jesuses disciples
- The brother of a single person: Jacob Grimm's brother, Wilhelm.
- Pronounced: jacob grimms brother wilhelm
- The books possessed or written by Charles Dickens: Charles Dickens's books
- Pronounced: charles dickenses books
- The philosophy of a single philosopher: Socrates's philosophy.
- Pronounced: socrateses philosophy
- The lack of relevancy of a single official: The Lord Warden of the Cinque Ports's irrelevancy.
- Pronounced: the lord warden of the cinque portses irrelevancy
- The McNuggets produced by a single restaurant named McDonald's: The local McDonald's's McNuggets.
- Pronounced: the local micdonaldses micnuggets
- The first track of a single album titled His 'n' Hers: His 'n' Hers's first track.
- Pronounced: his en herses first track
- Examples:
- When the person or object doing the possessing is plural—a normal plural, where s or es is added to the singular to form it into a plural—you always add ' to denote that it is doing the possessing.
- Examples:
- The barking of multiple dog: Those dogs' incessant barking.
- The legs of a various table: My tables' legs.
- The waves of various ocean: The oceans' waves.
- Problems possessed by others: The others' problems.
- The single heal collectively possessed by multiple persons with the same name, Achille: The Achilles' heel
- Pronounced: the achilles heal
- The published compendium of multiple persons with the same surname, Grimm: Grimms' Fairy Tales.
- Pronounced: grimms fairy tales
- The books collectively possessed or collectively written by multiple persons with the same name, Charles Dicken: Charles Dickens' books
- Pronounced: charles dickens books
- The philosophy of multiple persons with the same name, Socrate: The Socrates' philosophy.
- Pronounced: The Socrates philosophy
- The McNuggets produced by the various McDonald's branches: McDonald's' McNuggets.
- Pronounced: micdonaldss micnuggets
- Examples:
- When the person or object doing the possessing is plural—where plurality is not denoted by adding s or es to the singular—you always add 's to denote that it is doing the possessing.
- Examples:
- Multiple men possessing a single hat: The men's hat.
- Multiple men possessing a multiple hats: The men's hats.
- Multiple children possessing a single game: The children's game.
- Multiple children possessing a multiple games: The children's games.
- A single evil plan held in common by multiple attorneys-general: The attorneys-general's evil plan.
- Pronounced: the attorneys generals evil plan
- Multiple evil plan held, whether individually or in common, by multiple attorneys-general: The attorneys-general's evil plans.
- Pronounced: the attorneys generals evil plans
- The legs of multiple people: People's legs.
- Pronounced: peoples legs
- The various sides of various dice: The dice's various sides.
- Pronounced: the dices various sides
- The lack of relevancy of multiple officials who have held the same title: The Lords Warden of the Cinque Ports's irrelevancy.
- Pronounced: the lords warden of the cinque portses irrelevancy
- Examples:
- Exceptions:
- Her
- Hers
- His
- Its
- It's was originally proper, was was dropped in the early 1800s. It now refers exclusively to contractions of it is.
- Mine
- My
- Their
- Theirs
- Our
- Ours
- Whose
- Your
- Yours
How placement disambiguates
editEach of these four phrases has a distinct meaning:
Phrase
Meaning
- Your friend's neighbour's libertarian outlook
- The libertarian outlook of a neighbour of a single friend of yours
- Your friend's neighbours' libertarian outlook
- The libertarian outlook of multiple neighbours of a single friend of yours
- Your friends' neighbour's libertarian outlook
- The libertarian outlook of a single neighbour of multiple friends of yours
- Your friends' neighbours' libertarian outlook
- The libertarian outlook of various neighbours of multiple friends of yours
Each of these three sentences has a distinct meaning:
Sentence
Explanation
- The king said, "Those things are my subject's."
- The king is claiming that those things belong to one of his subjects, or perhaps to his only subject.
- The king said, "Those things are my subjects'."
- The king is claiming that those things, whether individually or in common, belong to various subjects of his.
- The king said, "Those things are my subjects."
- The king is referring to his subjects as his "things."