Chapter Two: Rule One

II.  ELEMENTARY RULES OF USAGE


Rule 1. Form the Possessive Singular of Nouns with 's.

Form the possessive singular of nouns with 's. Follow this rule whatever the final consonant. Thus write,

  • Charles's friend
  • Burns's poems
  • the witch's malice

This is the usage of the United States Government Printing Office and of the Oxford University Press.

Exceptions are the possessives of ancient proper names in -es and -is, the possessive Jesus', and such forms as for conscience' sake, for righteousness' sake. But such forms as Achilles' heel, Moses' laws, Isis' temple are commonly replaced by

  • the heel of Achilles
  • the laws of Moses
  • the temple of Isis

The pronominal possessives hers, its, theirs, yours, and oneself have no apostrophe.

Next: Chapter Two: Rule Two

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