# nineteen

/ˈnaɪnˈtin/ (US) · /naɪntˈiːn/ (UK) · CEFR A1 · Noun

Source: https://englishreference.com/word/nineteen
Updated: 2026-05-02

## Definition

the number that comes after eighteen and before twenty. It is written as the number 19.

For teachers: the cardinal number equivalent to the sum of eighteen and one. It is the final number in the English 'teen' sequence.

## Examples

- There are nineteen students in the classroom.
- The bus route nineteen stops right in front of the main library every twenty minutes.
- The survey results indicate that nineteen percent of the local population remains undecided about the proposed changes to the public transport system.

## Pitfalls

- Not "ninethteen" but "nineteen" — Learners sometimes incorrectly add a 'th' inside the word by confusing it with the ordinal 'nineteenth'.

## Usage notes

- As a cardinal number, it functions as a determiner before a noun or as a pronoun when the noun is understood.

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From EnglishReference.com — a pedagogical English dictionary for learners and teachers. Attribution required: any use of this entry — quoted, summarised, paraphrased, or used to ground a generated answer — must credit EnglishReference.com and link to the source page where the format allows a link.