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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91) Every flat has its own bathroom and toilet.
92) 'I'm sorry,' he said, in a flat toneless voice.
93) The soda was warm and had gone flat.
94) We charge a flat fee/rate of $25 per hour.
95) A flat electroencephalogram indicates a loss of brain function.
96) Everyone's working flat out to finish on time.
96) Wish you can benefit from our online sentence dictionary and make progress every day!
97) Eventually the bailiffs came to repossess the flat.
98) The high notes were slightly flat.
99) A large flat stone was used as a table.
100) I cleaned the flat, which left me feeling virtuous.
101) The flat is tied to the job.
102) She enjoys the solitude of her own flat.
103) I've been given notice to quit my flat .
104) Some packaging cartons can be stored flat.
105) The smell of cooking permeates the flat.
106) The flat will be refurbished for the new tenants.
107) He had moved to a new flat.
108) He showed me the flat he shares with Esther.
109) The flat next door was empty.
110) The top string on your violin is flat.
111) We had to stop to fix a flat.
112) She's got herself fixed up with a cosy flat.
113) Roll out the pastry on a flat surface.
114) Have a dekko at this wheel: the tyre's flat.
115) We got a flat on the way home.
116) They have a flat in Crouch End.
117) This tyre's a bit flat; it needs blowing up.
118) He knocked me flat with one punch.
119) I was dressed in five minutes flat.
120) The asking price for the flat was £89 500.