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upon - definition and synonyms


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preposition upon pronunciation in American English /əˈpɑn/
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  1. 1
    literary on or onto something
    Shadows were flickering upon the studio floor.
    He believes we were put upon this earth for a purpose.
  2. 2
    formal used after some verbs with the same meaning ason
    A police patrol happened upon a robbery in a bank yesterday.
    They draw upon their experience to educate and guide new companies.
    My whole future depended upon the decision of this one manager.
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  3. 3
    formal immediately after doing something or after something happens
    His first act upon taking office was to repeal the luxury tax.
    Upon his release, Davis went immediately to his mother’s.
  4. 4
    if an event or time is upon you, it is going to happen very soon
    The fall TV season is upon us.
  5. 5
    used between two nouns that are the same for emphasizing that there is a large number of the thing that you are mentioning
    I’ve written to you, year upon year, and never heard from you.
    We drove across mile upon mile of wide-open space.
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a course of study which is much shorter than a university course and focuses on the skills you need for a job, especially computer-related skills

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a stupid person

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an ancient Roman system of underfloor heating, used to heat houses with hot air; from the Latin 'hypocaustum'

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