Meaning & Definition of Eighteen in English

Four plus eighteen is twenty-two.

Four plus eighteen is twenty-two.

I am eighteen years old.

Common sense is the collection of prejudices acquired by age eighteen.

Ten, eleven, twelve, thirteen, fourteen, fifteen, sixteen, seventeen, eighteen, nineteen, twenty.

He is eighteen months old.

He is not more than eighteen.

We graduate from high school at eighteen.

Now that you are eighteen, you can get a driver's license.

I am eighteen years old.