nineteen
SayNYN-teen/ˈnaɪnˌtin/UK/ˈnaɪntiːn/
- 1The number that comes after eighteen and before twenty, written as 19.
There are nineteen students in our class this year.
She turned nineteen on her last birthday.
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Origin
It comes from old English words meaning nine and ten put together. It is made from "nine" plus "-teen".