Other forms: ones
One is the first number, the one you start counting on. One nose, one moon, one biscuit left in the tin.
It does far more than count. It stands in for a noun you have already named — "Which jumper?" "The blue one." "The ones on the top shelf." — and English insists on it where other languages are happy to say just "the blue". It marks a single unnamed time: one day, one morning in July, one of these days. It means the same thing as identical in phrases like "they all pulled in one direction". And there is the formal pronoun for people in general — "one must be careful what one says" — which sounds grand and old-fashioned in Britain, where ordinary speech uses you instead.
1nounoneThe number 1, the first and smallest whole counting number.~88%
“There is only one biscuit left in the tin.”
2pronounwordA word standing in for a noun already mentioned or understood.~6%
“I'll take the red one, please.”
3pronoungeneralPeople in general, including the speaker.~6%
“One must be careful what one says at these dinners.”
Shares are an estimate: a language model read 17 sentences found in the wild and placed 17 of them on a sense — a count of our sample, not a measurement of English.
one is a number.
One has been one for a very long time. Old English ān meant "one", from Proto-Germanic *ainaz, from the Proto-Indo-European root *h₁óynos, "single, one". Worn down in speech, the same word became the articles a and an, so one, a and an are the same word in three states — and Latin ūnus, Spanish uno and Russian odin are all cousins.
Proto-Indo-European
*h₁óynos
Middle English
on
English, today
one
From Middle English on. 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”). a doublet of a and an and Uno. Cognate with Scots ae, ane, wan, yin (“one”); frr ån (“one”); stq aan (“one”); West Frisian ien (“one”); Dutch een, één (“one”); German Low German een; German ein, eins (“one”); Danish en (“one”); Swedish en (“one”); Norwegian Nynorsk ein (“one”), Icelandic einn (“one”); Latin ūnus (“one”) (itc-ola oinos); Russian оди́н, Spanish uno. ഒന്ന്, ஒன்னு, ஒண்ணு, ஒன்று.
Etymology from Wiktionary, CC BY-SA