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flat

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adverb British English pronunciation: flat /flæt/ 
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comparativeflatter
superlativeflattest
  1. 1
    stretched out or lying on a surface

    Carole says she’s not comfortable lying flat.

    We heard a bang and threw ourselves flat on the ground.

    He laid the map out flat on the table.

    Thesaurus entry for this meaning of  flatThesaurus entry for this meaning of flat
  4. 4
    informal completely

    They turned me down flat.

    flat broke (=having no money at all):

    We were flat broke at the time.

    go flat against something (=completely ignore someone’s authority):

    I warned you not to do it but you went flat against my advice.

    Thesaurus entry for this meaning of  flatThesaurus entry for this meaning of flat

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This is the British English definition of flat. View American English definition of flat.

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