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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211) We were late because we had to stop and fix a flat.
212) On a plate in front of him was piled a pyramid of flat white biscuits.
213) He felt a bit flat after his friends had gone.
214) We had not been able to gain admittance to the flat.
215) She changed into flat casuals before walking round the town.
216) We ran flat out for about half a mile before we could throw them off.
216) Sentencedict.com try its best to gather and make good sentences.
217) She lay flat on her back in the warm sunshine.
218) Two people in the flat recalled hearing a loud crash about 1.30 a.m.
219) He bedded with that girl you used to share a flat with.
220) Noise can be quite a problem when you're living in a flat.
221) There are drainage/irrigation channels all over this flat agricultural land.
222) They're paying 75000 for a small flat it's beyond belief!
223) Once you have a flat in central Berlin,you can always monetize it when the prices rise.
224) She told me flat she would not speak to me again.
225) They were staunch British patriots and had portraits of the Queen in their flat.
226) Much of the countryside in East Anglia is very flat.
227) You should put some air in your tyres - they look flat to me.
228) Warm weather has attracted the flat fish close to shore.
229) That night I lay flat on my back and stared up at the ceiling.
230) Small bodies of water pockmark the flat face of the area.
231) That sofa would take up too much room in the flat.
232) She blew up the flat tyre with a bicycle pump.
233) Father spread the world map out flat on the floor and tried to find out the town where his son was fighting.
234) Then, after I finally got back on the highway, I developed a flat.
235) Liz meant it as a joke but it fell flat.
236) I am working flat out to get this job finished by next week.
237) The flat land gave the soldiers no cover from enemy fire.
238) I enjoyed the comparative calm of his flat after the busy office.
239) Her home is a rented one-bedroom flat in a shabby part of town.
240) The flat has four separate bedrooms and a communal kitchen.