• One thing (among a group of others); one member of a group.
  • The first mentioned of two things or people, as opposed to the other.
  • Any person (applying to people in general).
  • Any person, entity or thing.




  • To cause to become one; to gather into a single whole; to unite.


Similar words


  • From Middle English oon, on, oan, an, from Old English ān, from Proto-West Germanic *ain, from Proto-Germanic *ainaz, from Proto-Indo-European *óynos. Cognate with Scots ae, ane, wan, yin; North Frisian ån; Saterland Frisian aan; West Frisian ien ("one"); Dutch een, één; German Low German een; German ein, eins; Swedish en; Norwegian Nynorsk ein, Icelandic einn; Latin ūnus (Old Latin oinos); Russian оди́н. Uno.
  • Use as indefinite personal pronoun influenced by unrelated French on.
  • Verb form from Middle English onen.

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