ninetieth.
The ordinal form of the number ninety.
Meaning & usage
The ordinal form of the number ninety.
Where this word comes from
From earlier ninteth, from Middle English nyntithe; for the modern form, see the etymological notes at twentieth.
The person or thing in the ninetieth position.
One of ninety equal parts of a whole.
Where this word comes from
From earlier ninteth, from Middle English nyntithe; for the modern form, see the etymological notes at twentieth.
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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.
Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.