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Added 9 October 2026

one

/wʌn/ noun

In Latin: ūnus, ūna, ūnum Wiktionary

noun Definition from WordNet 3.1, Princeton University. Pronunciation from Wiktionary, via Kaikki.org. More about one at Wordnik → Where our words come from →

The smallest whole number or a numeral representing this number.
he has the one but will need a two and three to go with it
A single person or thing.
he is the best one

adjective

Used of a single unit or thing; not two or more.
`ane' is Scottish
Having the indivisible character of a unit.
a unitary action
Of the same kind or quality.
two animals of one species

Origin

PIE word *h₁óynos Etymology tree Proto-Indo-European *ís? Proto-Indo-European *h₁óynos Proto-Germanic *ainaz Proto-West Germanic *ain Old English ān Middle English on English one From Middle English oon, on, oan, an, from Old English ān (“one”), from Proto-West Germanic *ain, from Proto-Germanic *ainaz (“one”), from Proto-Indo-European *h₁óynos (“single, one”). Doublet of a, an, and Uno.

From Wiktionary, via Kaikki.org (CC BY-SA)

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