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let - definition and synonyms


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verb let pronunciation in American English /let/
Word Forms
present tense
present participleletting
past tenselet
past participlelet
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  1. 1
    [transitive] to allow something to happen
    let someone/something do something: I stepped back and let him pass.
    let someone/something do something: Alice’s mom won’t let her come with us.
    Let your imagination run wild.
    let something in/out/through etc.: Open the windows and let some fresh air into the room.
    There are holes between the stones that let the wind through.
    let someone know (=tell someone): Let us know what time you want us to be there.
    let yourself: She lets herself be talked into all kinds of schemes.
  2. 2
    [transitive] [always in imperative] used for showing that you are angry or tired, and do not care what happens
    Let her do all the work for a change!
  3. 3
    [transitive] [always in imperative] used for giving an order or instruction
    Let the games begin!
  4. 4
    [intransitive/transitive] mainly British to rent a room, apartment, house, etc. to someone
    let something to someone: He’s let his cottage to some people from London.
  5. 5
    [transitive] [usually in imperative] maths used in mathematics for saying that you are imagining that something is true, usually in order to prove a principle of mathematics
    Let x = 5.
    Let ABC be a triangle.



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

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