His/Her and Their

The Quick Answer
When your singular person could be male or female, you have three options: (1) use their, (2) use his/her, or (3) use his with a caveat. For example:
  • Each team leader is responsible for their team.
  • (Using their for a singular is acceptable despite what some might tell you.)

  • Each team leader is responsible for his/her team.
  • (This is acceptable, but it's a bit clumsy.)

  • Each team leader is responsible for his team.
  • (This is definitely acceptable if all team leaders are male. It's even acceptable if they're not (with a caveat explaining that his means his/her), but it runs the risk of appearing sexist.)

His/Her or Their?

The word their can be singular. For example:
  • Please ask your guest to collect their coat before leaving.
  • (In this example, their refers back to guest, which is singular. The word guest is known as the antecedent of their.)

  • Each of them gave their opinion.
  • (Here, the antecedent of their is each, which is singular.)
Even though their can be singular, you should be aware that some people (particularly those with a fairly good understanding of grammar) dislike their being used as a singular because they know it as a plural possessive adjective.

Personal Pronouns

Here is a list of personal pronouns (in their various forms) showing their as a plural concept. (This is the basis of the argument for those who claim that their cannot be used as a singular.) Remember though, their can be used for a singular antecedent.

PersonSubjective CaseObjective CasePossessive Case
Possessive Adjective
Possessive Case
Absolute Possessive Pronouns
First Person Singular I me my mine
Second Person Singular you you your yours
Third Person Singular he/she/it him/her/it his/her/its his/hers/its
First Person Plural we us our ours
Second Person Plural you you your yours
Third Person Plural they them their theirs

Options for His/Her and Their

When your singular person could be male or female, you have three options: (1) use their, (2) use his/her, or (3) use his with a caveat. For example:
  • Please ask your guest to collect his/her coat before leaving.
  • (This version will placate those who don't like their being used as a singular, but it is very untidy.)
  • Please ask your guest to collect his coat before leaving.
  • (This version can be used if you know all the guests are male. It could even be used if the guests are males and females, but this is likely to offend. It is fairly common to see a caveat at the start of a document (especially legal documents) which states "His is used throughout this document to denote male or female." However, this still runs the risk of appearing sexist.)

  • Please ask your guest to collect their coat before leaving.
  • (This is the best version.)
Here are some more examples:
  • Each person gave his/her opinion.
  • Each person gave his opinion.
  • Each person gave their opinion.

See Also

What is an antecedent? What are possessive adjectives? What does singular mean? What does plural mean? Do you write try and or try to?