
neunzehn
nineteen
The cardinal number between eighteen and twenty, represented by the numeral 19.
Das Buch hat neunzehn Kapitel.
The book has nineteen chapters.
nineteen
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nineteen
The cardinal number between eighteen and twenty, represented by the numeral 19.
Das Buch hat neunzehn Kapitel.
The book has nineteen chapters.
The number 'neunzehn' (nineteen) follows the German system for numbers from 13 to 19: it is formed from the ones digit ('neun' = nine) and the word 'zehn' (ten).
Dreizehn, vierzehn, fünfzehn ... neunzehn, zwanzig.
Thirteen, fourteen, fifteen ... nineteen, twenty.
As a numeral before a noun, 'neunzehn' (nineteen) is not declined. It always keeps its base form.
Sie hat mit neunzehn Jahren ihr Studium begonnen.
She began her studies at nineteen.
To form the ordinal number, you add the ending '-te': 'der/die/das neunzehnte' (the nineteenth). For dates, the form 'am neunzehnten' (on the nineteenth) is used.
Wir feiern am neunzehnten Juni unseren Hochzeitstag.
We celebrate our wedding anniversary on the nineteenth of June.
ninety
“Neunzig” refers to the number 90, while “neunzehn” refers to the number 19. The similar-sounding endings therefore stand for clearly different numbers: “neunzig” is used for 90, and “neunzehn” for 19.

Für die kleine Feier stehen neunzehn Stühle im Saal.
There are nineteen chairs in the hall for the small celebration.
Für das Konzert stehen neunzig Stühle im Saal.
There are ninety chairs in the hall for the concert.