Bill is my 27 year-old brother, he is ...

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New Member
Mexican Spanish
I would like to know if it is a correct usage. I mean, using the word "year" in singular in this case. Thanks
  • HalloweenHJB

    Senior Member
    American English, Midwest USA
    Yes. The phrase "year-old" in this context functions as an adjective and doesn't change, no matter the number of years: "my one year-old is walking." Does this help?


    Senior Member
    AE, Español
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