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Definition of flat adjective from the Oxford Advanced Learner's Dictionary

flat

adjective
 
/flæt/
 
/flæt/
(comparative flatter, superlative flattest)
Idioms
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    level

  1. having a level surface, not curved or sloping, and without holes or any bits sticking out
    • low buildings with flat roofs
    • I need a flat surface to write on.
    • A large flat screen was mounted on the wall.
    • We found a large flat rock to sit on.
    • People used to think the earth was flat.
    • a large, deep dish with a flat bottom
    • exercises to help you maintain a flat stomach
    Topics Colours and Shapesa2
    Oxford Collocations Dictionaryverbs
    • be
    • look
    • become
    adverb
    • extremely
    • fairly
    • very
    See full entry
  2. (of land) without any slopes or hills
    • The road stretched ahead across the flat landscape.
    • The desert was flat, mile after mile.
    • He reached a flatter section of land near the river.
    • the flat plains of northern Germany
    Topics Geographya2
    Oxford Collocations Dictionaryverbs
    • be
    • look
    • become
    adverb
    • extremely
    • fairly
    • very
    See full entry
  3. (of an area of water) calm and without waves
    • The sails hung limply in the flat calm (= conditions at sea when there is no wind and the water is completely level).
    • The sea was almost completely flat.
    • The water was dead flat, like a mirror.
  4. not high

  5. broad but not very high
    • Chapattis are a kind of flat Indian bread.
    • flat shoes (= with no heels or very low ones)
    • (figurative) The company's organizational structure was kept deliberately flat, with only three levels of hierarchy.
  6. not exciting

  7. not exciting; not feeling or showing interest or enthusiasm
    • He felt very flat after his friends had gone home.
    • It was a curiously flat note on which to end the election campaign.
    Extra Examples
    • Life will seem a bit flat without you.
    • She was feeling very flat after the excitement of the flight.
  8. voice

  9. not showing much emotion; not changing much in tone
    • Her voice was flat and expressionless.
    • He spoke in a flat Midlands accent.
    • He went on in a flat tone.
  10. colours/pictures

  11. very smooth, with no contrast between light and dark, and giving no impression of depth
    • Acrylic paints can be used to create large, flat blocks of colour.
  12. business

  13. not very successful because very little is being sold; not changing or increasing
    • The housing market has been flat for months.
    • Interest rates have remained flat.
    Topics Businessc2
  14. refusal/denial

  15. [only before noun] not allowing discussion or argument; definite
    • Her request was met with a flat refusal.
    • He gave a flat ‘No!’ to one reporter's question.
    • These results are in flat contradiction to the theory of relativity.
    Topics Opinion and argumentc2
  16. in music

  17. used after the name of a note to mean a note a semitone lower
    • That note should be B flat, not B.
    opposite sharp compare naturalTopics Musicc1
  18. below the correct pitch (= how high or low a note sounds)
    • The high notes were slightly flat.
    opposite sharp
  19. drink

  20. no longer having bubbles in it; not fresh
    • The soda was warm and had gone flat.
    Topics Drinksc2
  21. battery

  22. (British English) unable to supply any more electricity
  23. tyre

  24. not containing enough air, usually because of a hole
  25. feet

  26. with no natural raised curves under the feet see also flat-footed
    More Like This Consonant-doubling adjectivesConsonant-doubling adjectives
  27. Word Originadjective Middle English: from Old Norse flatr.
Idioms
and that’s flat!
  1. (British English, informal) that is my final decision and I will not change my mind
    • You can't go and that's flat!
as flat as a pancake
  1. (informal) completely flat
    • The country around here is as flat as a pancake.
in a (flat) spin
  1. very confused, worried or excited
    • Her resignation put her colleagues in a spin.
    Topics Feelingsc2
(flat) on your back
  1. (informal) in bed because you are ill
    • She's been flat on her back for over a week now.
    • (figurative) The UK market was flat on its back (= business was very bad).
See flat in the Oxford Advanced American DictionarySee flat in the Oxford Learner's Dictionary of Academic English
alloy
noun
 
 
From the Topic
Physics and chemistry
C2
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