eighteen
SayAY-teen/ˈeɪ(t).tin/UK/ˈeɪ.tiːn/
- 1The number that comes after seventeen and before nineteen, written as 18.
Like counting all your fingers and toes, then taking two away.
She turns eighteen next week and can finally get her own library card.
There are eighteen kids in my little brother's class this year.
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Origin
From Old English eahtatīene, made from the words for "eight" and "-teen."