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ENGLISH · A WORD WITH POSSIBILITIES

nine.

A numerical value equal to 9; the number following eight and preceding ten.

4 characters1 syllables approx.English language

Meaning & usage

num/naɪn/General-American, Received-Pronunciation[naɪ̯n]General-American, Received-Pronunciation

  1. A numerical value equal to 9; the number following eight and preceding ten.

  2. Describing a group or set with nine elements.

    A cat has nine lives.
Where this word comes from

PIE word *h₁néwn̥ Etymology tree Proto-Indo-European *h₁néwn̥ Proto-Germanic *newunt Proto-Germanic *newun Proto-West Germanic *neun Proto-West Germanic *nigun Old English nigon Middle English nyn English nine From Middle English nyn, nyne, from Old English nigon (“nine”), from Proto-West Germanic *neun, from Proto-Germanic *newun (“nine”), from Proto-Indo-European *h₁néwn̥ (“nine”). Cognate with Scots neen, nine (“nine”), Saterland Frisian njúgen (“nine”), West Frisian njoggen (“nine”), Dutch negen (“nine”), German Low German negen (“nine”), German neun (“nine”), Danish ni (“nine”), Swedish nio (“nine”), Icelandic níu (“nine”), Gothic 𐌽𐌹𐌿𐌽 (niun, “nine”), Latin novem (“nine”), Ancient Greek ἐννέα (ennéa, “nine”), Sanskrit नव (náva, “nine”).

noun/naɪn/General-American, Received-Pronunciation[naɪ̯n]General-American, Received-Pronunciation

  1. The digit or figure 9.

  2. A playing card with nine pips.

  3. A nine-millimeter semi-automatic pistol.

  4. A statistical unit of proportion (of reliability, purity, etc.), counting the number of digits nine in a percentage.

    plural-normally
    They guaranteed that our Web site would have 99.99% uptime, or four nines.

  5. A baseball club, team, or lineup (composed of nine players).

Where this word comes from

PIE word *h₁néwn̥ Etymology tree Proto-Indo-European *h₁néwn̥ Proto-Germanic *newunt Proto-Germanic *newun Proto-West Germanic *neun Proto-West Germanic *nigun Old English nigon Middle English nyn English nine From Middle English nyn, nyne, from Old English nigon (“nine”), from Proto-West Germanic *neun, from Proto-Germanic *newun (“nine”), from Proto-Indo-European *h₁néwn̥ (“nine”). Cognate with Scots neen, nine (“nine”), Saterland Frisian njúgen (“nine”), West Frisian njoggen (“nine”), Dutch negen (“nine”), German Low German negen (“nine”), German neun (“nine”), Danish ni (“nine”), Swedish nio (“nine”), Icelandic níu (“nine”), Gothic 𐌽𐌹𐌿𐌽 (niun, “nine”), Latin novem (“nine”), Ancient Greek ἐννέα (ennéa, “nine”), Sanskrit नव (náva, “nine”).

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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.