Synonym: apartment, dull, even, horizontal, level, lifeless, off-key, smooth, suite, unmusical. Antonym: bumpy, rough, sharp, uneven. Similar words: inflation, flag, flash, flame, flavor, flare up, flamboyant, late. Meaning: [flæt] 
n. 1. a level tract of land 2. a shallow box in which seedlings are started 3. a musical notation indicating one half step lower than the note named 4. freight car without permanent sides or roof 5. a deflated pneumatic tire 6. scenery consisting of a wooden frame covered with painted canvas; part of a stage setting 7. a suite of rooms usually on one floor of an apartment house. adj. 1. having a surface without slope, tilt in which no part is higher or lower than another 2. having a relatively broad surface in relation to depth or thickness 3. not modified or restricted by reservations 4. stretched out and lying at full length along the ground 5. lacking contrast or shading between tones 6. lowered in pitch by one chromatic semitone 7. flattened laterally along the whole length (e.g., certain leafstalks or flatfishes) 8. lacking taste or flavor or tang 9. lacking stimulating characteristics; uninteresting 10. having lost effervescence 11. (of taxes) not increasing as the amount taxed increases 12. sounded or spoken in a tone unvarying in pitch 13. horizontally level 14. lacking the expected range or depth; not designed to give an illusion or depth 15. (of a tire) completely or partially deflated 16. not reflecting light; not glossy 17. commercially inactive. adv. 1. with flat sails 2. in a forthright manner; candidly or frankly.
n. 1. a level tract of land 2. a shallow box in which seedlings are started 3. a musical notation indicating one half step lower than the note named 4. freight car without permanent sides or roof 5. a deflated pneumatic tire 6. scenery consisting of a wooden frame covered with painted canvas; part of a stage setting 7. a suite of rooms usually on one floor of an apartment house. adj. 1. having a surface without slope, tilt in which no part is higher or lower than another 2. having a relatively broad surface in relation to depth or thickness 3. not modified or restricted by reservations 4. stretched out and lying at full length along the ground 5. lacking contrast or shading between tones 6. lowered in pitch by one chromatic semitone 7. flattened laterally along the whole length (e.g., certain leafstalks or flatfishes) 8. lacking taste or flavor or tang 9. lacking stimulating characteristics; uninteresting 10. having lost effervescence 11. (of taxes) not increasing as the amount taxed increases 12. sounded or spoken in a tone unvarying in pitch 13. horizontally level 14. lacking the expected range or depth; not designed to give an illusion or depth 15. (of a tire) completely or partially deflated 16. not reflecting light; not glossy 17. commercially inactive. adv. 1. with flat sails 2. in a forthright manner; candidly or frankly. 
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271) In return for some caretaking duties, we are offering a free flat and a small remuneration.
272) Did you hear Paul's flat got turned over last week?
273) A flat in London costs almost half as much again as a flat in Glasgow.
274) I used a spade to beat down the mud until it was flat and hard.
275) The explosion which followed blasted out the external supporting wall of her flat.
276) He felt very flat after his friends had gone home.
277) The child thought the world was flat until I enlightened him!
278) He was drunk and flat on his back on the street.
279) After marriage Mrs Black felt boxed in living in that small flat.
280) People used to think that the world was flat; now we know it is round.
281) They set up house together in a small flat in Brighton.
282) I've got a puncture and my spare is flat too!
283) After the excitement of the party,[http://sentencedict.com/flat.html] life seems rather flat now.
284) Fold the ironing board up so that it is flat.
285) I made them a reasonable offer but they turned it down flat.
286) His car alarm had been going off for two days and, as a result, the battery was flat.
287) After running in the national games, she was flat out for a week.
288) If it wasn't for the main actress, Ellen Barkin[Sentencedict.com], the plot would have fallen flat on its face.
289) It's cheaper for you to hire a flat when you stay in Europe.
290) Cambridge to Newcastle in four hours is good going - you must have been driving flat out all the way.