Who's or Whose?

Let's take a look at using who's vs. whose in a sentence.

Every stumble over when to use who's and whose in a sentence? These two words sound the same, but they have entirely different definitions. Understanding when to use each one is essential for clear and polished writing.

Who's = Who is/Who has

The word who's is a contraction, which is a word that has been shortened by omitting one or more letters, typically indicated by an apostrophe. It is used for either 'who is' or 'who has.' If you can expand the word into one of these phrases and the sentence still makes sense, then the correct word to use is who's.

Examples:

• Who's coming to dinner? (Who is coming...)

• Mary is the one who's finished the report. (Who has finished...)

Whose = Possession

Whose is a possessive pronoun, which is a word that shows that something belongs to someone or something, and it replaces a noun or noun phrase to make sentences clearer and less repetitive. It does not involve a contraction.

Examples:

• Whose book is this?

• The writer whose article was published celebrated the achievement.

A Simple Trick

When unsure which word to use, substitute either 'who is' or 'who has' in the sentence. If the sentence still makes sense, use who's. If not, you should use whose.

Why it matters in proofreading

Mixing up who's and whose is a common error that can undermine the professionalism of your writing. Proofreaders pay close attention to these small but important distinctions to ensure clarity and correctness.

Mastering whether to use who's or whose in a sentence may seem like a small step, but it makes a big difference-because great writing is all about the details.

Watch for future grammar tips.