adj · adv · noun · verb · 105 senses · updated from the 2026-07-25 local source snapshot
Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.
Sound
Pronunciation
Each Play button uses your device's default local English voice, or a natural local fallback. The selected voice name appears after playback. This is synthesized speech, not a source recording.
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
22
adj
Meaning 22
Not having an inflectional ending or sign, such as a noun used as an adjective, or an adjective as an adverb, without the addition of a formative suffix; or an infinitive without the sign "to".
Definition source: English Wiktionary via Wiktextract
2021 (retrieved), racing365.com, "Flat Racing Explained" https://racing365.com/flat-racing-explained/ In British horse racing, the classics are a series of horse races run over the flat (i.e. without jumps).
Meaning relationships
Synonyms: none provided
Antonyms: none provided
42
noun
Meaning 42
An area of level ground (sometimes covered with shallow or tidal water).
the area in the centre of a racecourse.
Definition source: English Wiktionary via Wiktextract
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
44
noun
Meaning 44
A note played one chromatic semitone lower than a natural, denoted by the symbol ♭ placed after the letter representing the note (e.g., B♭) or in front of the note symbol (e.g. ♭♪).
Definition source: English Wiktionary via Wiktextract
Topics: entertainment, lifestyle, music
Examples
The key of E♭ has three flats.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
45
noun
Meaning 45
A flat tyre/flat tire.
Definition source: English Wiktionary via Wiktextract
Usage: informal
Topics: automotive, transport, vehicles
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
46
noun
Meaning 46
A type of ladies' shoe with a very low heel.
Definition source: English Wiktionary via Wiktextract
Usage: in-plural
Examples
She liked to walk in her flats more than in her high heels.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
47
noun
Meaning 47
A type of flat-soled running shoe without spikes.
Definition source: English Wiktionary via Wiktextract
Usage: in-plural
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
48
noun
Meaning 48
A thin, broad brush used in oil and watercolour painting.
Definition source: English Wiktionary via Wiktextract
Qualifier: painting
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
49
noun
Meaning 49
The most prominent flat part of something.
Definition source: English Wiktionary via Wiktextract
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
50
noun
Meaning 50
The most prominent flat part of something.
The flat side of a blade, as opposed to the sharp edge.
Definition source: English Wiktionary via Wiktextract
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
51
noun
Meaning 51
The most prominent flat part of something.
The palm of the hand, with the adjacent part of the fingers.
Definition source: English Wiktionary via Wiktextract
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
52
noun
Meaning 52
A wide, shallow container or pallet.
Definition source: English Wiktionary via Wiktextract
Examples
a flat of strawberries
Meaning relationships
Synonyms: none provided
Antonyms: none provided
53
noun
Meaning 53
Ellipsis of flat water (“nonfizzy drinking water”).
Definition source: English Wiktionary via Wiktextract
Usage: US, abbreviation, alt-of, ellipsis
Examples
Waiter: Would you like sparkling or flat? Guest: Flat, thank you.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
54
noun
Meaning 54
A large mail piece measuring at least 8 1/2 by 11 inches, such as catalogs, magazines, and unfolded paper enclosed in large envelopes.
Definition source: English Wiktionary via Wiktextract
Qualifier: postal
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
55
noun
Meaning 55
A railroad car without a roof, and whose body is a platform without sides; a platform car or flatcar.
Definition source: English Wiktionary via Wiktextract
Usage: US
Topics: rail-transport, railways, transport
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
56
noun
Meaning 56
A flat spot on the wheel of a rail vehicle.
Definition source: English Wiktionary via Wiktextract
Topics: rail-transport, railways, transport
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
57
noun
Meaning 57
A flat-bottomed boat, without keel, and of small draught.
Definition source: English Wiktionary via Wiktextract
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
58
noun
Meaning 58
A subset of n-dimensional space that is congruent to a Euclidean space of lower dimension.
Definition source: English Wiktionary via Wiktextract
Topics: geometry, mathematics, sciences
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
59
noun
Meaning 59
A straw hat, broad-brimmed and low-crowned.
Definition source: English Wiktionary via Wiktextract
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
60
noun
Meaning 60
A flat sheet for use on a bed.
Definition source: English Wiktionary via Wiktextract
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
61
noun
Meaning 61
A flat, glossy children's book with few pages.
Definition source: English Wiktionary via Wiktextract
Topics: media, publishing
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
62
noun
Meaning 62
A platform on a wheel, upon which emblematic designs etc. are carried in processions.
Definition source: English Wiktionary via Wiktextract
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
63
noun
Meaning 63
A horizontal vein or ore deposit auxiliary to a main vein; also, any horizontal portion of a vein not elsewhere horizontal.
Definition source: English Wiktionary via Wiktextract
Topics: business, mining
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
64
noun
Meaning 64
A rectangular wooden structure covered with masonite, lauan, or muslin, often produced in standard modules, that is used to build wall surfaces on stage. Flats can be painted and outfitted with doors and/or windows to depict a building or other part of a scene, and are a hard-surfaced alternative to a backcloth or backdrop.
Definition source: English Wiktionary via Wiktextract
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: flat tire
Antonyms: none provided
Broader terms: pneumatic tire, pneumatic tyre
102
noun
Meaning 102
a shallow box in which seedlings are started
Definition source: Princeton WordNet 3.0
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
Broader terms: box
103
noun
Meaning 103
freight car without permanent sides or roof
Definition source: Princeton WordNet 3.0
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: flatcar, flatbed
Antonyms: none provided
Broader terms: freight car
104
noun
Meaning 104
a musical notation indicating one half step lower than the note named
Definition source: Princeton WordNet 3.0
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
Broader terms: musical notation
Narrower terms: double flat
105
noun
Meaning 105
a level tract of land
Definition source: Princeton WordNet 3.0
Examples
the salt flats of Utah
Meaning relationships
Synonyms: none provided
Antonyms: none provided
Broader terms: plain, field, champaign
Narrower terms: alluvial flat, alluvial plain, salt flat, salt plain
History
Etymology
Etymology tree Proto-Germanic *flataz Old Norse flatrbor. Middle English flat English flat From Middle English flat, a borrowing from Old Norse flatr (compare Norwegian and Swedish flat, Danish flad), from Proto-Germanic *flataz, from Proto-Indo-European *pleth2- (“flat”); akin to Saterland Frisian flot (“smooth”), German Flöz (“a geological layer”), Ancient Greek πλατύς (platús), Latvian plats, Sanskrit प्रथस् (prathas, “extension”). Doublet of plat and pleyt. The noun is from Middle English flat (“level piece of ground, flat edge of a weapon”), from the adjective. The algebraic sense was coined by Serre in a 1956 paper, originally as French plat.
From an alteration (due to Scots flatt (“a level part of a structure”)) of Scots flet, flett (“inner part of a house”), from Middle English flet (“dwelling”), from Old English flet, flett (“ground floor, dwelling”), from Proto-West Germanic *flati, from Proto-Germanic *flatją (“floor”), from Proto-Germanic *flataz (“flat”), from Proto-Indo-European *pleth2- (“flat”). Akin to Old Frisian flet, flette (“dwelling, house”). More at flet, flat1.
From Middle English flatten, from Old French flatir (“to knock or strike down, dash”), from Frankish *flattjan (“to move the palm of the hand”), from Proto-Germanic *flatjaną (“to make flat, flatten”).
Across languages
Translations
488 source translations are retained for this English entry.
Afrikaans:
plat
— having no variations in altitude
Albanian:
rrafshtë
— having no variations in altitude
Arabic:
مُسَطَّح
(musaṭṭaḥ)
— having no variations in altitude
Arabic:
مسطح
(meṣaṭṭaḥ)
— having no variations in altitude
Armenian:
հարթ
(hartʻ)
— having no variations in altitude
Armenian:
տափակ
(tapʻak)
— having no variations in altitude
Assamese:
সমান
(xman)
— having no variations in altitude
Assamese:
চেপেটা
(sepeta)
— having no variations in altitude
Asturian:
llanu
— having no variations in altitude
Asturian:
planu
— having no variations in altitude
Azerbaijani:
düz
— having no variations in altitude
Basque:
lau
— having no variations in altitude
Basque:
laun
— having no variations in altitude
Basque:
ordeka
— having no variations in altitude
Belarusian:
пло́скі
(plóski)
— having no variations in altitude
Belarusian:
ро́ўны
(równy)
— having no variations in altitude
Bengali:
সমতল
(śomotol)
— having no variations in altitude
Central Bikol:
lapnad
— having no variations in altitude
Bulgarian:
пло́сък
(plósǎk)
— having no variations in altitude
Bulgarian:
ра́вен
(ráven)
— having no variations in altitude
Catalan:
pla
— having no variations in altitude
Chechen:
веда
(veda)
— having no variations in altitude
Cherokee:
ᎤᏩᎾᏕᏍᎩ
(uwanadesgi)
— having no variations in altitude
Chinese Cantonese:
平
(ping4)
— having no variations in altitude
Eastern Min Chinese:
平
(bang)
— having no variations in altitude
Chinese Mandarin:
平
(píng)
— having no variations in altitude
Chinese Mandarin:
平坦
(píngtǎn)
— having no variations in altitude
Czech:
plochý
— having no variations in altitude
Czech:
rovný
— having no variations in altitude
Danish:
flad
— having no variations in altitude
Dutch:
vlak
— having no variations in altitude
Dutch:
plat
— having no variations in altitude
Esperanto:
plata
— having no variations in altitude
Esperanto:
ebena
— having no variations in altitude
Estonian:
lame
— having no variations in altitude
Estonian:
lapik
— having no variations in altitude
Evenki:
наптама
(naptama)
— having no variations in altitude
Finnish:
litteä
— having no variations in altitude
Finnish:
laakea
— having no variations in altitude
Finnish:
tasainen
— having no variations in altitude
French:
plat
— having no variations in altitude
Friulian:
plan
— having no variations in altitude
Friulian:
plac
— having no variations in altitude
Friulian:
vualîf
— having no variations in altitude
Galician:
plano
— having no variations in altitude
Galician:
chairo
— having no variations in altitude
Galician:
chan
— having no variations in altitude
Georgian:
ბრტყელი
(brṭq̇eli)
— having no variations in altitude
German:
flach
— having no variations in altitude
German:
eben
— having no variations in altitude
Gothic:
𐌹𐌱𐌽𐍃
(ibns)
— having no variations in altitude
Greek:
επίπεδος
(epípedos)
— having no variations in altitude
Greek:
ισόπεδος
(isópedos)
— having no variations in altitude
Ancient Greek:
πλατύς
(platús)
— having no variations in altitude
Ancient Greek:
ὁμαλός
(homalós)
— having no variations in altitude
Ancient Greek:
πεδιεινός
(pedieinós)
— having no variations in altitude
Hawaiian:
papa
— having no variations in altitude
Hebrew:
שָׁטוּחַ
(shatúakh)
— having no variations in altitude
Hindi:
समतल
(samtal)
— having no variations in altitude
Hungarian:
lapos
— having no variations in altitude
Icelandic:
flatur
— having no variations in altitude
Ido:
plata
— having no variations in altitude
Indonesian:
datar
— having no variations in altitude
Indonesian:
gepeng
— having no variations in altitude
Indonesian:
rata
— having no variations in altitude
Ingrian:
latsu
— having no variations in altitude
Ingrian:
tasa
— having no variations in altitude
Ingrian:
lakkia
— having no variations in altitude
Ingush:
воьда
(vöda)
— having no variations in altitude
Irish:
cothrom
— having no variations in altitude
Irish:
réidh
— having no variations in altitude
Italian:
piano
— having no variations in altitude
Italian:
piatto
— having no variations in altitude
Japanese:
平ら
(taira)
— having no variations in altitude
Japanese:
平坦
(heitan)
— having no variations in altitude
Japanese:
扁平
(hempei)
— having no variations in altitude
Javanese:
rata
— having no variations in altitude
Old Javanese:
rata
— having no variations in altitude
Kazakh:
жазық
(jazyq)
— having no variations in altitude
Kazakh:
жалпак
(jalpak)
— having no variations in altitude
Kazakh:
жайпақ
(jaipaq)
— having no variations in altitude
Khmer:
រាបស្មើ
(riep smaǝ)
— having no variations in altitude
Khmer:
រាបទាប
(riep tiep)
— having no variations in altitude
Korean:
판판하다
(panpanhada)
— having no variations in altitude
Korean:
평평(平平)하다
(pyeongpyeonghada)
— having no variations in altitude
Central Kurdish:
تات
(tat)
— having no variations in altitude
Central Kurdish:
تەخت
(text)
— having no variations in altitude
Kyrgyz:
жалпак
(jalpak)
— having no variations in altitude
Lao:
ສເມີ
(sa mœ̄)
— having no variations in altitude
Lao:
ສເມີພຽງ
(sa mœ̄ phīang)
— having no variations in altitude
Lao:
ພຽງ
(phīang)
— having no variations in altitude
Latin:
plānus
— having no variations in altitude
Latvian:
plakans
— having no variations in altitude
Latvian:
lēzens
— having no variations in altitude
Lingala:
patatalu
— having no variations in altitude
Lithuanian:
plokščias
— having no variations in altitude
Lithuanian:
lėkštas
— having no variations in altitude
Macedonian:
рамен
(ramen)
— having no variations in altitude
Makasae:
tetuku
— having no variations in altitude
Malay:
datar
— having no variations in altitude
Māori:
tūpā
— having no variations in altitude
Māori:
pātiki
— having no variations in altitude
Māori:
parahe
— having no variations in altitude
Māori:
paparahi
— having no variations in altitude
Māori:
papatahi
— having no variations in altitude
Māori:
papatairite
— having no variations in altitude
Māori:
paparite
— having no variations in altitude
Māori:
pararaha
— having no variations in altitude
Māori:
kurapāpā
— having no variations in altitude
Marathi:
सपाट
(sapāṭ)
— having no variations in altitude
Marathi:
चपटे
(ċapṭe)
— having no variations in altitude
Minangkabau:
data
— having no variations in altitude
Mingrelian:
ლაპარტყია
(laṗarṭq̇ia)
— having no variations in altitude
Mingrelian:
ბირტყა
(birṭq̇a)
— having no variations in altitude
Mingrelian:
ლაფართია
(lapartia)
— having no variations in altitude
Mirandese:
praino
— having no variations in altitude
Navajo:
ditʼąh
— having no variations in altitude
Norman:
pliat
— having no variations in altitude
Norwegian:
flat
— having no variations in altitude
Old English:
efn
— having no variations in altitude
Old Galician-Portuguese:
chão
— having no variations in altitude
Persian:
صاف
(sâf)
— having no variations in altitude
Persian:
مسطح
(mosattah)
— having no variations in altitude
Persian:
هموار
(hamvâr)
— having no variations in altitude
Polabian:
flötĕ
— having no variations in altitude
Polish:
płaski
— having no variations in altitude
Polish:
równy
— having no variations in altitude
Portuguese:
plano
— having no variations in altitude
Portuguese:
chato
— having no variations in altitude
Romanian:
plan
— having no variations in altitude
Romanian:
șes
— having no variations in altitude
Romanian:
neted
— having no variations in altitude
Romanian:
plat
— having no variations in altitude
Romansh:
plat
— having no variations in altitude
Romansh:
guliv
— having no variations in altitude
Romansh:
uliv
— having no variations in altitude
Romansh:
anguliv
— having no variations in altitude
Romansh:
planiv
— having no variations in altitude
Romansh:
plàn
— having no variations in altitude
Romansh:
guleiv
— having no variations in altitude
Romansh:
gualiv
— having no variations in altitude
Russian:
пло́ский
(plóskij)
— having no variations in altitude
Russian:
ро́вный
(róvnyj)
— having no variations in altitude
Russian:
поло́гий
(pológij)
— having no variations in altitude
Sardinian:
pranu
— having no variations in altitude
Serbo-Croatian:
раван
— having no variations in altitude
Serbo-Croatian:
ravan
— having no variations in altitude
Slovak:
plochý
— having no variations in altitude
Slovak:
rovný
— having no variations in altitude
Slovene:
raven
— having no variations in altitude
Lower Sorbian:
płony
— having no variations in altitude
Southern Altai:
јалбак
(ǰalbak)
— having no variations in altitude
Spanish:
llano
— having no variations in altitude
Spanish:
plano
— having no variations in altitude
Svan:
ტყჷფრი
(ṭq̇əpri)
— having no variations in altitude
Svan:
ტყელ
(ṭq̇el)
— having no variations in altitude
Swedish:
flat
— having no variations in altitude
Swedish:
plan
— having no variations in altitude
Swedish:
platt
— having no variations in altitude
Tagalog:
patag
— having no variations in altitude
Tajik:
мусаттаҳ
(musattah)
— having no variations in altitude
Tamil:
தட்டை
(taṭṭai)
— having no variations in altitude
Tamil:
சம
(cama)
— having no variations in altitude
Tausug:
datag
— having no variations in altitude
Telugu:
బల్లపరుపు
(ballaparupu)
— having no variations in altitude
Tetum:
tetuk
— having no variations in altitude
Thai:
เรียบ
(rîiap)
— having no variations in altitude
Tibetan:
ལེབ་ལེབ
(leb leb)
— having no variations in altitude
Turkish:
düz
— having no variations in altitude
Ottoman Turkish:
دوز
(düz)
— having no variations in altitude
Turkmen:
düz
— having no variations in altitude
Ukrainian:
пло́ский
(plóskyj)
— having no variations in altitude
Ukrainian:
рі́вний
(rívnyj)
— having no variations in altitude
Ukrainian:
поло́гий
(polóhyj)
— having no variations in altitude
Ukrainian:
пласки́й
(plaskýj)
— having no variations in altitude
Uzbek:
tekis
— having no variations in altitude
Uzbek:
silliq
— having no variations in altitude
Uzbek:
sidirgʻa
— having no variations in altitude
Venetan:
guałivo
— having no variations in altitude
Venetan:
gałivo
— having no variations in altitude
Venetan:
piat
— having no variations in altitude
Venetan:
pian
— having no variations in altitude
Vietnamese:
bằng
— having no variations in altitude
Vietnamese:
phẳng
— having no variations in altitude
Welsh:
gwastad
— having no variations in altitude
Yakut:
хаптаҕай
(qaptağay)
— having no variations in altitude
Yiddish:
פֿלאַך
(flakh)
— having no variations in altitude
Catalan:
xato
— of a body part having no projection
Chinese Mandarin:
平
(píng)
— of a body part having no projection
Finnish:
litteä
— of a body part having no projection
German:
flach
— of a body part having no projection
German:
platt
— of a body part having no projection
Māori:
kenu
— of a body part having no projection
Māori:
parahe
— of a body part having no projection
Māori:
pongare
— of a body part having no projection
Spanish:
chato
— of a body part having no projection
Afrikaans:
eentonig
— without variations in pitch
Albanian:
rrafshët
— without variations in pitch
Finnish:
lattea
— without variations in pitch
Finnish:
monotoninen
— without variations in pitch
German:
glatt
— without variations in pitch
Greek:
άτονος
(átonos)
— without variations in pitch
Indonesian:
datar
— without variations in pitch
Italian:
monotòno
— without variations in pitch
Japanese:
平板
(heiban)
— without variations in pitch
Māori:
tangihē
— without variations in pitch
Māori:
orotaha
— without variations in pitch
Norwegian:
monoton
— without variations in pitch
Polish:
monotonny
— without variations in pitch
Portuguese:
monótono
— without variations in pitch
Romanian:
monoton
— without variations in pitch
Romanian:
monotonă
— without variations in pitch
Slovene:
monoton
— without variations in pitch
Swedish:
monoton
— without variations in pitch
Telugu:
చదునైన
(cadunaina)
— without variations in pitch