Etymology
Old English an (same word as an), from Germanic *ainaz, from PIE *oinos. Cognate to German ein, French un, Russian один (odin).
Cardinal number
- Arabic numerals: 1
- Chinese numerals: 壹, 一
- Greek numerals: A'
- Roman numerals: I
The cardinality of the smallest nonempty set. The number of heads a typical human has.
The ordinality of an element which has no predecessor; usually called first but sometimes number one.
Translations
- Albanian: një
- Arabic: وَاحِد (waaHidun)
- Basque: bat
- Breton: unan
- Catalan: u m (the name of the number), un m, una f
- Cornish: onan
- Corsican: unu
- Chinese: 一 ( pinyin: yī )
- Czech: jedna f, jeden m, jedno n
- Danish: en, een
- Dutch: een, één
- Esperanto: unu
- Estonian: üks
- Finnish: yksi
- French: un m, une f
- Frisian: ien
- German: ein, eins
- Greek: ένας (enas)
- Guarani: peteĩ
- Hebrew: אחת (A'khat) f (Used in counting), אחד (E'khad) m
- Hungarian: egy
- Icelandic: einn m, ein f, eitt n
- Indonesian: satu
- Ido: un
- Interlingua: un, uno
- Italian: un m, uno (before m noun beginning with ps, gn, x, z or s + consonant), una f
- Japanese: 一 (いち, ichi), 一つ (ひとつ, hitotsu), ワン
- Kalaallisut: ataasiq
- Korean: 하나 (hana)/한 (han); 일 (一; il)
- Latin: unus
- Lojban: pa
- Manchu: emu
- Marshallese: juon
- Minangkabau: Ciek
- Nahuatl: ce
- Norwegian (bokmål): en
- Norwegian (nynorsk): ein
- Old English: an
- Polish: jeden
- Portuguese: um m, uma f
- Romanian: unu m, una f; +subst. -> un m, o f
- Russian: один m, одна f, одно n
- Slovio: din
- Swedish: ett, en
- Spanish: un, uno m, una f
- Tagalog: isa
- Thai: หนึ่ง
- Tok Pisin: wan (the name of the number), wanpela
- Tupinambá: îepé, oîepé
- Turkish: bir (bir küçük kebap lütven)
- Vietnamese: một (IPA: /mòt/)
- Welsh: un
Pronoun
Used in either the nominative or accusative case. (Reflexive case: oneself or one's self)
- any person or thing. (nominative case)
- Example: One shouldn't be too quick to judge.
- any person or thing. (accusative case)
- Example: I want the green one.