18 year old vs 18 year olds

Both "18 year old" and "18 year olds" are correct, but they are used in different contexts. "18 year old" is used when referring to a single person who is 18 years old, while "18 year olds" is used when referring to multiple people who are 18 years old.

Last updated: March 20, 2024

18 year old

This phrase is correct when referring to a single person who is 18 years old.

This phrase is used to describe a single person who is 18 years old. It is followed by a noun, such as "18 year old student."

Examples:

She is an 18 year old student.
He is an 18 year old athlete.

Alternatives:

18-year-old
18-year-old person
person who is 18 years old
individual who is 18 years old
someone who is 18 years old

18 year olds

This phrase is correct when referring to multiple people who are 18 years old.

This phrase is used to describe multiple people who are 18 years old. It is followed by a noun, such as "18 year olds in the class."

Examples:

The 18 year olds in the class are very talented.
She enjoys spending time with other 18 year olds.

Alternatives:

18-year-olds
group of 18 year olds
people who are 18 years old
individuals who are 18 years old
those who are 18 years old

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18 year old vs 18 year olds

18 year old

18 year olds

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