Synonyms of flat in English

: flat1flat2

flat1


See definition of flat

adjective

1‘a flat surface’

SYNONYMS

level, horizontal, levelled

smooth, even, uniform, consistent, featureless, flush, plumb, regular, unvarying, continuous, unbroken, plane

ANTONYMS

vertical, bumpy

2‘the sea was flat’

SYNONYMS

calm, still, tranquil, pacific, undisturbed, without waves, like a millpond

glassy, motionless, waveless, unagitated

literary stilly

ANTONYMS

choppy

3‘a flat wooden box’

SYNONYMS

shallow, not deep, wide

ANTONYMS

deep

4‘she put on some flat sandals’

SYNONYMS

low, low-heeled, heelless, without heels

ANTONYMS

high-heeled

5‘his voice was flat and without expression’

SYNONYMS

monotonous, toneless, droning, boring, dull, tedious, uninteresting, unexciting, soporific

bland, vapid, vacant, insipid, prosaic, dreary, colourless, featureless, jejune

emotionless, unfeeling, unexcited, unexpressive, expressionless, lifeless, spiritless, lacklustre, dead

informal deadly

ANTONYMS

exciting, emotional

6‘he felt flat, used-up, weary’

SYNONYMS

depressed, dejected, dispirited, despondent, downhearted, disheartened, discouraged, low, low-spirited, down, gloomy, glum, unhappy, blue, desolate, weighed down, oppressed

without energy, enervated, sapped, weary, tired out, worn out, exhausted, devitalized, drained

informal down in the mouth, down in the dumps

ANTONYMS

cheerful, full of beans

7‘the market was flat’

SYNONYMS

slow, inactive, sluggish, slow-moving, slack, quiet, not busy, depressed, stagnant, static, dead, unproductive

ANTONYMS

busy

8‘flat champagne’

SYNONYMS

still, dead, no longer effervescent

ANTONYMS

sparkling

9‘a flat battery’

SYNONYMS

expired, dead, finished, used up, run out

British informal kaput, dud

British informal duff

ANTONYMS

fresh, working

10‘a flat tyre’

SYNONYMS

deflated, punctured, burst, collapsed, blown out, ruptured, pierced, empty of air, decompressed, depressurized

ANTONYMS

inflated

11‘I charge a flat £30 fee’

SYNONYMS

fixed, set, regular, established, unchanging, unvarying, invariable, unfluctuating, consistent, constant, uniform, straight, hard and fast

12‘a flat denial of any impropriety’

SYNONYMS

outright, direct, point blank, out and out, downright, absolute, definite, positive, straight, stark, all out

plain, explicit

firm, resolute, adamant, assertive, emphatic, insistent, final, conclusive

complete, utter, categorical, unconditional, sheer, thorough, thoroughgoing

unqualified, unmodified, unequivocal, unquestionable, unrestricted, unmitigated


adverb

1‘I lay down flat on the floor’

SYNONYMS

stretched out, outstretched, spreadeagled, prone, reclining, sprawling, supine, prostrate, recumbent

on one's back, on one's front, on one's stomach

rare procumbent

2‘I thought you'd turn me down flat’

SYNONYMS

outright, directly, absolutely

informal plainly, explicitly

informal firmly, resolutely, adamantly, assertively, emphatically, insistently, finally, conclusively

informal completely, utterly, categorically, unconditionally, thoroughly, definitely

informal unequivocally, unquestionably


Synonyms of flat in English

: flat1flat2

flat2


See definition of flat

noun

1‘a two-bedroom flat’

SYNONYMS

apartment, set of rooms, penthouse, home, residence, accommodation

rooms, living quarters, quarters

Australian home unit

informal pad, digs

North American informal crib


Phrases

    fall flat

      ‘I just felt a lot of the jokes fell flat’

      SYNONYMS

      fail, be unsuccessful, not succeed, lack success, fall through, break down, abort, miscarry, be defeated, suffer defeat, be in vain, be frustrated, collapse, founder, misfire, backfire, not come up to scratch, meet with disaster, come to grief, come to nothing, come to naught, miss the mark, run aground, go astray

    flat out

      ‘I'd been working flat out’

      SYNONYMS

      hard, as hard as possible, for all one's worth, vigorously, with a vengeance, to the utmost, to the full, to the limit, all out

      at full speed, as fast as possible, post-haste, at full tilt, at breakneck speed, full steam ahead

      informal

      hell for leather, hammer and tongs, like crazy, like mad, like a bat out of hell, at a lick, like the wind, like a bomb, like greased lightning

      British informal

      like billy-o, like the clappers, at a rate of knots

      ANTONYMS

      moderately