What does of mean?
Of is a preposition that expresses relationships between people, objects, places, activities, and ideas. It commonly indicates possession or belonging, as in 'the keys of the house,' but it also shows origin or source, composition, connection, and membership. For example, a person may be 'a friend of mine,' a bridge may be 'made of steel,' and a story may concern 'the history of the city.' Because of its broad function, of can link almost any two relevant noun phrases, though the precise relationship is normally made clear by context. In phrases such as 'out of,' 'off,' and 'free of,' it contributes to idiomatic expressions that do not simply describe literal spatial relationships. Although it is very short, of is essential to English because it efficiently marks the connections that give sentences their structure and meaning.
prepositionUsed to indicate possession, origin, relationship, or connection between two nouns or noun phrases.
- Indicating possession or belonging to someone or something.
- Indicating origin, source, or derivation from something.
- Indicating composition or material.
- Indicating connection, relationship, association, or reference.
- Indicating a part or portion of a whole.
"The novel tells the story of a family living in the north of England."
"She is a member of the local music society."
"The museum is made of stone and was built in the 18th century."
The little preposition 'of' is a master of connection: it can link ownership, origin, composition, identity, and space in a single stroke.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of of
Of comes from Old English of, a preposition and adverb whose meanings included 'from,' 'out of,' 'away from,' and 'by.' It was inherited into modern English through Middle English. The word also has a cognate in Old Frisian and is related to other Germanic forms expressing separation or departure. In modern English, its role expanded from mainly spatial and source-related meanings to the broad relational use familiar today.
How of is actually used
Of is one of the most common function words in English and carries little independent meaning beyond indicating a relationship. Its exact role depends on the words surrounding it. It is used in formal and informal contexts alike, although some fixed expressions can sound literary or archaic.
Easily confused with of
Of is a preposition indicating a relationship, while off can mean away from something or indicate that something is not functioning.