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OF may refer to:


Up to date as of January 15, 2010

Definition from Wiktionary, a free dictionary

See also OF, of-, and off



Most common English words: the « #2: of » and » to » in


Old English of.



Wikipedia has an article on:



  1. Belonging to or associated with.
    The properties of this substance are interesting.
    I could hear the sounds of heavy machinery and of workers.
    That person is a friend of mine and a friend of my children.
  2. Containing; comprising; made from.
    Could you bring me a glass of water?
    This is an unusually long list of examples.
    First, cut a small square of cloth.
    The suit was made of wool.
    His dog was full of fleas
  3. About; concerning (poetic).
    He told me of the old days
  4. Connects a quantifier with the thing quantified.
    The rocket reached a height of over 100 km.
  5. Connects a noun derived from a verb with the object of that verb.
    Some resisted the admission of the new members to the club.
    This chemical increases the conduction of action potentials in the neuron.
  6. (in expressions of time) Before.
    It's almost a quarter of four.
  7. Connects a jurisdiction to its name.
    The city of Lawrence is located on the Kaw river.
  8. Indicates the age of a person.
    That's a big responsibility for a boy of seven.
    That's a big responsibility for a boy of seven years.
  9. Indicates distance from, direction from, separation from, or deprivation from.
    within a mile of the church, south of Omaha, robbed of one's money, out of the car.

Usage notes

  • (belonging to or associated with): When applied to a person or persons, the possessive is generally used instead.
  • (containing, comprising, or made from): Of may be used directly with a verb or adjectival phrase.

Derived terms


The translations below need to be checked and inserted above into the appropriate translation tables, removing any numbers. Numbers do not necessarily match those in definitions. See instructions at Help:How to check translations.



  1. (usually in modal perfect constructions) Common misspelling of have.
    * I would of come. — “I would have come.”
    * She should of said.... — “She should have said....”
    • 1992, Neal Stephenson, Snow Crash, Bantam Spectra, p. 340,
      "You couldn't of known," Livio says.

See also


  • Anagrams of fo





  1. (coordinating) or
  2. (subordinating) whether, if

of (...) of dat (...) [1]

  1. whether (...) or if (...)
    Ik weet niet of ik moet vertrekken of dat ik het haar moet uitleggen. — I don't know whether I should leave or if I should explain it to her.

of (...) of (...)

  1. either (...) or (...)
  2. whether (...) or (...)

of (...) dan wel (...)

  1. whether (...) or (...)
    In 1950 bij het referendum over de vraag of Leopold III, gezien zijn houding tijdens Wereldoorlog II, terug de troon mag betreden, dan wel moet aftreden, (de zogenaamde Koningskwestie), kiest 72% van de Vlamingen voor de terugkeer van Leopold III maar is er een meerderheid tegen in Brussel en Wallonië. — In 1950 by the referendum over the question of whether Leopold III, his attitude during World War II having been witnessed, should be able to come back to the throne, or should abdicate, (the so-called Royal Question), 72% of Flemings chose in favor of the return of Leopold III but there was a plurality against this in Brussels and Wallonia.

Derived terms




  1. too
    Ég er of falleg.
    I am too beautiful. (referring to a woman)
    Ég er of fallegur.
    I am too beautiful. (referring to a man)

Old English


Unstressed form of æf



  1. of

West Frisian



  1. or

Simple English

Of is a preposition used in the English language to show a possessive relationship. For example, the phrase "book of maps" means that the book has maps. The phrase "father of Mike" means the father that is being mentioned is Mike's father.

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