- flat
- flatflat1 [flat]adj.flatter, flattest [ME < ON flatr, akin to OHG flaz < IE * plāt, plēt-, wide, flat (> Gr platys, broad, OE flet, floor) < base * plā-, broad]1. having a smooth, level surface; having little or no depression or elevation2.a) lying extended at full lengthb) spread out smooth and level3. touching at as many points as possible [with his back flat against the wall]4.a) having little depth or thickness; broad, even, and thinb) having a flat heel or no heel [flat shoes]5. designating or having an almost straight or level trajectory or flight6. absolute; positive [a flat denial]7. not variable; fixed [a flat rate, a flat tax]8.a) without much business activity [a flat market]9. having little or no sparkle or taste; insipid [a flat drink]10. having little or no interest; monotonous; dull11. not clear or full; blurred [a flat sound ]☆ 12. emptied of air [a flat tire ]☆ 13. Informal completely without money; penniless14. without gloss [flat paint]15. Arta) lacking relief, depth, or perspectiveb) uniform in tint or shade16. Gram.a) not having the sign to: said of an infinitive: Ex.: go in “make it go”b) not having an inflectional ending: said esp. of certain adverbs: Ex.: he drove fast17. Musica) lower in pitch by a half step [D-flat (D♭)]b) out of tune by being below the true or proper pitch18. Phonet. designating the vowel a when it represents the sound (a) as in had or hat, articulated with the tongue in a relatively level position19. Photog. lacking in contrastadv.flatter, flattest1. in a flat manner; flatly (in various senses)2. in a prone or supine position3.a) exactly; precisely [to run a race in ten seconds flat]b) bluntly; abruptly [she left him flat ]☆ 4. Finance with no interest5. Music below the true or proper pitchn.1. a flat surface or part [the flat of the hand, of a sword, etc.]2. [often pl.] an expanse of level land3. a low-lying marsh4. a shallow; shoal5. any of various flat things; specif.,a) a shallow box or container, as for growing seedlings☆ b) short for FLATCARc) a piece of theatrical scenery on a flat frame☆ d) a deflated tiree) [pl.] women's flat-heeled shoes or slippers6. Football the area flanking either end of the offensive line7. Musica) a note or tone one half step below anotherb) the sign (♭) indicating such a notevt.flatted, flattingMusic to make flat; lower a half stepvi.to sing or play below the true or proper pitchSYN.- INSIPID, LEVEL——————fall flatto fail in the desired effect; be completely unsuccessful——————flat out Informal1. at full speed, with maximum effort, etc.2. clear(ly); definite(ly)flatlyadv.flatnessn.flat2 [flat]n.[altered < Scot dial. flet (ME & OE flet), a floor (of a dwelling): see FLAT1]Chiefly Brit. an apartment or suite of rooms on one floor of a building
English World dictionary. V. Neufeldt. 2014.