English · Word Candidate

eighteen

/ˈeɪ(t).tin/

Proposed by a contributor, not yet supported by evidence.

Meaning · English

The cardinal number occurring after seventeen and before nineteen, represented in Roman numerals as XVIII and in Arabic numerals as 18.

Numeral

Examples

The right of citizens of the United States, who are eighteen years of age or older, to vote shall not be denied or abridged by the United States or by any State on account of age.

Usage example from English Wiktionary (CC BY-SA 4.0, retrieved 2026-08-01)

Sources & notes

Adapted from English Wiktionary (CC BY-SA 4.0, retrieved 2026-08-01 via kaikki.org).

Common questions

What does “eighteen” mean?

The cardinal number occurring after seventeen and before nineteen, represented in Roman numerals as XVIII and in Arabic numerals as 18.

Is “eighteen” formal or informal?

No register label has been reviewed yet — treat it as neutral and check the usage notes above.

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