1. (noun) flat
a level tract of land
Synonyms: apartment, flatbed, flat tire, flatcar
Antonyms: one-dimensional, vertical, contrasty, cubic, inclined, stimulating, natural, sharp, effervescent, qualified, modulated, thick, upright, bright, linear, perpendicular, erect, tasty, uneven, unidimensional, three-dimensional, active
2. (noun) flat
a shallow box in which seedlings are started
Synonyms: apartment, flatbed, flat tire, flatcar
Antonyms: modulated, three-dimensional, uneven, effervescent, vertical, one-dimensional, natural, contrasty, sharp, inclined, cubic, stimulating, upright, thick, qualified, unidimensional, active, tasty, erect, perpendicular, linear, bright
3. (noun) flat
a musical notation indicating one half step lower than the note named
Synonyms: apartment, flatbed, flat tire, flatcar
Antonyms: stimulating, contrasty, linear, tasty, vertical, cubic, bright, three-dimensional, inclined, natural, modulated, upright, active, one-dimensional, unidimensional, perpendicular, qualified, erect, effervescent, thick, sharp, uneven
4. (noun) flatcar, flatbed, flat
freight car without permanent sides or roof
Synonyms: flat, flatbed, apartment, flat tire, flatcar
Antonyms: bright, modulated, thick, sharp, natural, vertical, one-dimensional, uneven, erect, stimulating, qualified, perpendicular, effervescent, inclined, three-dimensional, unidimensional, upright, tasty, contrasty, linear, cubic, active
5. (noun) flat, flat tire
a deflated pneumatic tire
Synonyms: apartment, flatbed, flat tire, flat, flatcar
Antonyms: inclined, modulated, sharp, contrasty, qualified, vertical, uneven, erect, upright, one-dimensional, three-dimensional, tasty, perpendicular, thick, unidimensional, stimulating, bright, natural, cubic, linear, active, effervescent
6. (noun) flat
scenery consisting of a wooden frame covered with painted canvas; part of a stage setting
Synonyms: apartment, flatbed, flat tire, flatcar
Antonyms: perpendicular, effervescent, one-dimensional, natural, thick, stimulating, sharp, inclined, vertical, contrasty, cubic, linear, modulated, active, upright, qualified, bright, uneven, tasty, three-dimensional, erect, unidimensional
7. (adj) apartment, flat
a suite of rooms usually on one floor of an apartment house
Synonyms: flat, flatbed, apartment, flat tire, flatcar
Antonyms: one-dimensional, thick, vertical, stimulating, natural, qualified, unidimensional, effervescent, cubic, modulated, upright, perpendicular, active, three-dimensional, uneven, erect, bright, inclined, contrasty, tasty, linear, sharp
8. (adj) flat, level, plane
having a surface without slope, tilt in which no part is higher or lower than another
Synonyms: plane, savourless, flavorless, categoric, matt, even, insipid, level, monotonic, compressed, tied(p), flat, unconditional, matted, vapid, level(p), categorical, monotonous, two-dimensional, matte, monotone, savorless, prostrate, bland, mat, flavourless, unwavering
Antonyms: effervescent, stimulating, tasty, upright, cubic, vertical, unidimensional, linear, uneven, contrasty, active, perpendicular, inclined, erect, qualified, modulated, one-dimensional, natural, thick, three-dimensional, sharp, bright
9. (adj) flat
having a relatively broad surface in relation to depth or thickness
Synonyms: plane, savourless, flavorless, categoric, matt, insipid, level, monotonic, compressed, unconditional, matted, vapid, categorical, monotonous, two-dimensional, matte, monotone, savorless, prostrate, bland, mat, flavourless
Antonyms: qualified, cubic, stimulating, one-dimensional, vertical, active, upright, effervescent, thick, bright, linear, contrasty, sharp, tasty, erect, perpendicular, three-dimensional, unidimensional, uneven, inclined, modulated, natural
10. (adj) categoric, categorical, flat, unconditional
not modified or restricted by reservations
Synonyms: plane, savourless, unconditioned, flavorless, categoric, matt, insipid, level, monotonic, compressed, unconditional, matted, flat, categorical, monotonous, two-dimensional, matte, monotone, savorless, prostrate, vapid, bland, mat, flavourless
Antonyms: upright, bright, erect, three-dimensional, qualified, stimulating, natural, contrasty, effervescent, modulated, sharp, inclined, cubic, unidimensional, one-dimensional, perpendicular, uneven, linear, vertical, active, tasty, thick
11. (adj) flat, prostrate
stretched out and lying at full length along the ground
Synonyms: plane, savourless, flavorless, categoric, matt, insipid, level, monotonic, compressed, flat, unconditional, prone, matted, vapid, categorical, monotonous, two-dimensional, matte, monotone, savorless, prostrate, bland, mat, flavourless
Antonyms: uneven, linear, modulated, one-dimensional, natural, effervescent, perpendicular, unidimensional, cubic, erect, vertical, active, bright, tasty, stimulating, upright, inclined, contrasty, thick, sharp, qualified, three-dimensional
12. (adj) flat
lacking contrast or shading between tones
Synonyms: plane, savourless, flavorless, categoric, matt, insipid, level, monotonic, compressed, unconditional, matted, vapid, categorical, monotonous, two-dimensional, matte, monotone, savorless, prostrate, bland, mat, flavourless
Antonyms: one-dimensional, three-dimensional, cubic, contrasty, tasty, sharp, thick, upright, perpendicular, qualified, modulated, unidimensional, natural, vertical, stimulating, erect, inclined, uneven, effervescent, linear, bright, active
13. (adj) flat
(of a musical note) lowered in pitch by one chromatic semitone
Synonyms: plane, savourless, flavorless, categoric, matt, insipid, level, monotonic, compressed, unconditional, matted, vapid, categorical, monotonous, two-dimensional, matte, monotone, savorless, prostrate, bland, mat, flavourless
Antonyms: contrasty, vertical, qualified, thick, uneven, stimulating, effervescent, upright, linear, one-dimensional, three-dimensional, sharp, cubic, active, bright, perpendicular, inclined, erect, modulated, natural, tasty, unidimensional
14. (adj) compressed, flat
flattened laterally along the whole length (e.g., certain leafstalks or flatfishes)
Synonyms: plane, savourless, flavorless, categoric, matt, tight, insipid, level, monotonic, compressed, unconditional, matted, flat, categorical, monotonous, two-dimensional, matte, monotone, savorless, prostrate, vapid, bland, mat, flavourless
Antonyms: qualified, contrasty, vertical, modulated, unidimensional, three-dimensional, erect, natural, cubic, linear, one-dimensional, upright, bright, inclined, perpendicular, stimulating, uneven, tasty, effervescent, sharp, active, thick
15. (adj) bland, flat, flavorless, flavourless, insipid, savorless, savourless, vapid
lacking taste or flavor or tang
Synonyms: plane, smooth, two-dimensional, flavorless, categoric, matt, savourless, jejune, insipid, level, monotonic, compressed, unconditional, matted, suave, vapid, categorical, monotonous, prostrate, matte, monotone, savorless, flat, bland, mat, flavourless, politic
Antonyms: cubic, stimulating, sharp, tasty, vertical, perpendicular, active, inclined, upright, effervescent, linear, thick, uneven, bright, one-dimensional, erect, unidimensional, qualified, modulated, contrasty, natural, three-dimensional
16. (adj) bland, flat
lacking stimulating characteristics; uninteresting
Synonyms: plane, smooth, two-dimensional, flavorless, categoric, matt, savourless, insipid, level, monotonic, compressed, unconditional, matted, suave, vapid, categorical, monotonous, prostrate, matte, monotone, savorless, flat, bland, mat, flavourless, politic
Antonyms: natural, one-dimensional, inclined, contrasty, modulated, uneven, sharp, stimulating, cubic, effervescent, active, three-dimensional, vertical, qualified, tasty, bright, perpendicular, upright, unidimensional, linear, thick, erect
17. (adj) flat
having lost effervescence
Synonyms: plane, savourless, flavorless, categoric, matt, insipid, level, monotonic, compressed, unconditional, matted, vapid, categorical, monotonous, two-dimensional, matte, monotone, savorless, prostrate, bland, mat, flavourless
Antonyms: contrasty, uneven, one-dimensional, inclined, tasty, stimulating, cubic, bright, upright, vertical, modulated, effervescent, three-dimensional, sharp, thick, erect, qualified, natural, unidimensional, perpendicular, active, linear
18. (adj) flat, monotone, monotonic, monotonous
sounded or spoken in a tone unvarying in pitch
Synonyms: plane, savourless, flavorless, categoric, matt, humdrum, insipid, level, monotonic, compressed, flat, unconditional, matted, vapid, categorical, monotonous, two-dimensional, matte, monotone, savorless, prostrate, bland, mat, flavourless
Antonyms: one-dimensional, vertical, uneven, linear, sharp, cubic, perpendicular, thick, contrasty, three-dimensional, upright, erect, inclined, effervescent, qualified, natural, bright, modulated, active, tasty, unidimensional, stimulating
19. (adj) flat
horizontally level
Synonyms: plane, savourless, flavorless, categoric, matt, insipid, level, monotonic, compressed, unconditional, matted, vapid, categorical, monotonous, two-dimensional, matte, monotone, savorless, prostrate, bland, mat, flavourless
Antonyms: linear, tasty, vertical, upright, inclined, unidimensional, one-dimensional, bright, qualified, erect, uneven, active, natural, effervescent, contrasty, perpendicular, sharp, thick, modulated, three-dimensional, stimulating, cubic
20. (adj) two-dimensional, 2-dimensional, flat
lacking the expected range or depth; not designed to give an illusion or depth
Synonyms: plane, savourless, flavorless, categoric, matt, insipid, level, monotonic, compressed, unconditional, matted, flat, savorless, categorical, monotonous, two-dimensional, matte, monotone, planar, prostrate, vapid, bland, mat, flavourless
Antonyms: erect, tasty, cubic, modulated, inclined, perpendicular, linear, uneven, effervescent, active, bright, vertical, sharp, upright, one-dimensional, three-dimensional, thick, unidimensional, stimulating, qualified, contrasty, natural
21. (adj) flat, mat, matt, matte, matted
not reflecting light; not glossy
Synonyms: plane, savourless, flavorless, categoric, matt, insipid, level, monotonic, compressed, flat, unconditional, matted, vapid, categorical, monotonous, two-dimensional, matte, monotone, savorless, prostrate, bland, mat, flavourless
Antonyms: perpendicular, one-dimensional, unidimensional, erect, sharp, bright, tasty, inclined, cubic, upright, natural, effervescent, active, contrasty, stimulating, vertical, thick, qualified, uneven, linear, three-dimensional, modulated
22. (adverb) flat
commercially inactive
Synonyms: plane, savourless, flavorless, categoric, matt, insipid, level, monotonic, compressed, unconditional, matted, vapid, categorical, monotonous, two-dimensional, matte, monotone, savorless, prostrate, bland, mat, flavourless
Antonyms: one-dimensional, sharp, perpendicular, stimulating, inclined, modulated, contrasty, cubic, three-dimensional, linear, erect, unidimensional, natural, effervescent, bright, uneven, tasty, vertical, active, qualified, upright, thick
23. (adverb) flat
with flat sails
Synonyms: directly, straight
Antonyms: unidimensional, three-dimensional, bright, tasty, active, effervescent, contrasty, thick, perpendicular, erect, natural, one-dimensional, modulated, linear, qualified, stimulating, vertical, cubic, inclined, sharp, upright, uneven
24. (adverb) directly, flat, straight
in a forthright manner; candidly or frankly
Synonyms: directly, at once, straightaway, now, like a shot, straight off, direct, flat, straight, right away, instantly, immediately, forthwith
Antonyms: linear, one-dimensional, three-dimensional, vertical, bright, effervescent, upright, erect, uneven, active, sharp, unidimensional, modulated, contrasty, cubic, tasty, perpendicular, inclined, qualified, stimulating, thick, natural
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Synonyms for flat 
