Indefinite Pronouns

In English, the indefinite pronouns are:

Singular:

• one
  one someone anyone no one everyone

• each
  each somebody anybody nobody everybody

• either or neither
  (n)either something anything nothing everything

Examples:

• Somebody is coming to dinner.
• Neither of us believes a word Harry says.

Plural:

Examples:

• Both are expected at the airport at the same time.
• Several have suggested canceling the meeting.

Singular with noncountables / Plural with countables:

Examples:

• Some of the dirt has become a permanent part of the rug.
• Some of the trees have been weakened by the storm.

Indefinite pronouns use apostrophes to indicate possessive case:

Examples:

• The accident is nobody’s fault.
• How will the roadwork affect one's daily commute?

Some indefinite pronouns may also be used as determiners.

one, each, either, neither, some, any, one, all, both, few, several, many, most

Note the differences:

• Each person has a chance.

  (Eachis a determiner describing person.)

• Each has a chance.

  (Each is an indefinite pronoun replacing a noun.)

• Both lawyers pled their cases well.

  (Both is a determiner describing lawyers.)

• Both were in the room.

  (Both is an indefinite pronoun replacing a noun.)