adj · adv · noun · verb · 39 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
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/smuːð/
US:Recorded audio is listed in the source snapshot.
Recorded audio is listed in the source snapshot.
rhymes with -uːð
CMU ARPABET:S M UW1 DH
Digits mark lexical stress: 1 primary, 2 secondary, 0 unstressed.
1
adj
Meaning 1
Having a texture that lacks friction. Not rough.
Definition source: English Wiktionary via Wiktextract
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
2
adj
Meaning 2
Without difficulty, problems, or unexpected consequences or incidents.
Definition source: English Wiktionary via Wiktextract
Examples
We hope for a smooth transition to the new system.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
3
adj
Meaning 3
Bland; glib.
Definition source: English Wiktionary via Wiktextract
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
4
adj
Meaning 4
Flowing or uttered without check, obstruction, or hesitation; not harsh; fluent.
Definition source: English Wiktionary via Wiktextract
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: seamless
Antonyms: none provided
5
adj
Meaning 5
Suave; sophisticated.
Definition source: English Wiktionary via Wiktextract
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
6
adj
Meaning 6
Natural; unconstrained.
Definition source: English Wiktionary via Wiktextract
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
7
adj
Meaning 7
Unbroken.
Definition source: English Wiktionary via Wiktextract
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
8
adj
Meaning 8
Placid, calm.
Definition source: English Wiktionary via Wiktextract
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
9
adj
Meaning 9
Lacking projections or indentations; not serrated.
Definition source: English Wiktionary via Wiktextract
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
10
adj
Meaning 10
Not grainy; having an even texture.
Definition source: English Wiktionary via Wiktextract
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
11
adj
Meaning 11
Having a pleasantly rounded flavor; neither rough nor astringent.
Definition source: English Wiktionary via Wiktextract
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
12
adj
Meaning 12
Having derivatives of all finite orders at all points within the function’s domain.
Definition source: English Wiktionary via Wiktextract
Topics: mathematics, sciences
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
13
adj
Meaning 13
That factors completely into small prime numbers.
Definition source: English Wiktionary via Wiktextract
Topics: mathematics, sciences
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
14
adj
Meaning 14
Lacking marked aspiration.
Definition source: English Wiktionary via Wiktextract
Etymology tree Old English smōþ Middle English smothe Proto-West Germanic *smanþī Old English smēþe Middle English smethe English smooth From Middle English smothe, smethe, from Old English smēþe, smōþ, both from Proto-West Germanic *smanþī, of unknown origin. Cognate with Scots smuith (“smooth”), Saterland Frisian smoud (“smooth”), Low German smood and smödig (“smooth, malleable, ductile”), Dutch smeuïg (“smooth”) (from earlier smeudig).
Across languages
Translations
332 source translations are retained for this English entry.
Amharic:
ለስላሳ
(läslasa)
— lacking friction, not rough
Arabic:
نَاعِم
(nāʕim)
— lacking friction, not rough
Arabic:
أَمْلَس
(ʔamlas)
— lacking friction, not rough
Arabic:
مالس
(mālis)
— lacking friction, not rough
Arabic:
ناعم
(nāʕim)
— lacking friction, not rough
Armenian:
հարթ
(hartʻ)
— lacking friction, not rough
Armenian:
ողորկ
(oġork)
— lacking friction, not rough
Aromanian:
buimatcu
— lacking friction, not rough
Aromanian:
duzi
— lacking friction, not rough
Aromanian:
ischiu
— lacking friction, not rough
Asturian:
llisu
— lacking friction, not rough
Azerbaijani:
hamar
— lacking friction, not rough
Azerbaijani:
rəvan
— lacking friction, not rough
Belarusian:
гла́дкі
(hládki)
— lacking friction, not rough
Bhojpuri:
चिकन
(cikan)
— lacking friction, not rough
Bulgarian:
гла́дък
(gládǎk)
— lacking friction, not rough
Burmese:
ချော
(hkyau:)
— lacking friction, not rough
Catalan:
llis
— lacking friction, not rough
Chamicuro:
pya'sino
— lacking friction, not rough
Chechen:
шера
(šera)
— lacking friction, not rough
Cherokee:
ᎤᏩᎾᏕᏍᎩ
(uwanadesgi)
— lacking friction, not rough
Chinese Mandarin:
平滑
(pínghuá)
— lacking friction, not rough
Chinese Mandarin:
光滑
(guānghuá, guānghua)
— lacking friction, not rough
Choctaw:
halʋsbi
— lacking friction, not rough
Crimean Tatar:
tegiz
— lacking friction, not rough
Czech:
hladký
— lacking friction, not rough
Dalmatian:
lois
— lacking friction, not rough
Danish:
glat
— lacking friction, not rough
Dutch:
glad
— lacking friction, not rough
Esperanto:
glata
— lacking friction, not rough
Estonian:
sile
— lacking friction, not rough
Even:
булдути
(ʙulduti)
— lacking friction, not rough
Finnish:
sileä
— lacking friction, not rough
French:
lisse
— lacking friction, not rough
Friulian:
lis
— lacking friction, not rough
Friulian:
vualîf
— lacking friction, not rough
Galician:
liso
— lacking friction, not rough
Georgian:
გლუვი
(gluvi)
— lacking friction, not rough
German:
glatt
— lacking friction, not rough
Gothic:
𐍃𐌻𐌰𐌹𐌷𐍄𐍃
(slaihts)
— lacking friction, not rough
Greek:
λείος
(leíos)
— lacking friction, not rough
Greek:
απαλός
(apalós)
— lacking friction, not rough
Ancient Greek:
λεῖος
(leîos)
— lacking friction, not rough
Ancient Greek:
λισσός
(lissós)
— lacking friction, not rough
Mbya Guarani:
yxyĩ
— lacking friction, not rough
Hawaiian:
paheʻe
— lacking friction, not rough
Hawaiian:
ʻōmolemole
— lacking friction, not rough
Hebrew:
חָלָק
(khalak)
— lacking friction, not rough
Hindi:
चिकना
(ciknā)
— lacking friction, not rough
White Hmong:
du
— lacking friction, not rough
Hungarian:
sima
— lacking friction, not rough
Icelandic:
sléttur
— lacking friction, not rough
Ido:
glata
— lacking friction, not rough
Indonesian:
halus
— lacking friction, not rough
Indonesian:
mulus
— lacking friction, not rough
Ingrian:
lakkia
— lacking friction, not rough
Ingush:
шаьра
(šära)
— lacking friction, not rough
Irish:
caoin
— lacking friction, not rough
Irish:
mín
— lacking friction, not rough
Italian:
liscio
— lacking friction, not rough
Italian:
mellifluo
— lacking friction, not rough
Japanese:
滑らかな
(nameraka na)
— lacking friction, not rough
Kapampangan:
malinatnat
— lacking friction, not rough
Kashubian:
głôdczi
— lacking friction, not rough
Kazakh:
тегіс
(tegıs)
— lacking friction, not rough
Korean:
매끄럽다
(maekkeureopda)
— lacking friction, not rough
Central Kurdish:
لووس
(lûs)
— lacking friction, not rough
Northern Kurdish:
lûs
— lacking friction, not rough
Northern Kurdish:
hilû
— lacking friction, not rough
Latgalian:
gluds
— lacking friction, not rough
Latgalian:
gludons
— lacking friction, not rough
Latin:
glaber
— lacking friction, not rough
Latin:
lēvis
— lacking friction, not rough
Latin:
teres
— lacking friction, not rough
Latvian:
gluds
— lacking friction, not rough
Luxembourgish:
glat
— lacking friction, not rough
Macedonian:
ма́зен
(mázen)
— lacking friction, not rough
Macedonian:
гла́док
(gládok)
— lacking friction, not rough
Malay:
licin
— lacking friction, not rough
Māori:
māeneene
— lacking friction, not rough
Māori:
mōhanihani
— lacking friction, not rough
Māori:
newanewa
— lacking friction, not rough
Māori:
koutata
— lacking friction, not rough
Māori:
mohimohi
— lacking friction, not rough
Middle English:
smethe
— lacking friction, not rough
Middle English:
smothe
— lacking friction, not rough
Moksha:
вадря
(vadrä)
— lacking friction, not rough
Mongolian:
тэгш
(tegš)
— lacking friction, not rough
Mongolian:
гөлгөр
(gölgör)
— lacking friction, not rough
Khiamniungan Naga:
tǖlīnglīng
— lacking friction, not rough
Navajo:
dilkǫǫh
— lacking friction, not rough
Occitan:
lis
— lacking friction, not rough
Old Occitan:
lis
— lacking friction, not rough
Church Slavic:
гладъкъ
(gladŭkŭ)
— lacking friction, not rough
Old English:
smēþe
— lacking friction, not rough
Persian:
لیز
(liz)
— lacking friction, not rough
Polish:
gładki
— lacking friction, not rough
Portuguese:
liso
— lacking friction, not rough
Romanian:
neted
— lacking friction, not rough
Romanian:
lin
— lacking friction, not rough
Romanian:
lis
— lacking friction, not rough
Romansh:
glisch
— lacking friction, not rough
Russian:
гла́дкий
(gládkij)
— lacking friction, not rough
Northern Sami:
livttis
— lacking friction, not rough
Scottish Gaelic:
mìn
— lacking friction, not rough
Scottish Gaelic:
sèimh
— lacking friction, not rough
Scottish Gaelic:
socrach
— lacking friction, not rough
Scottish Gaelic:
tlàth
— lacking friction, not rough
Serbo-Croatian:
гла̏дак
— lacking friction, not rough
Serbo-Croatian:
glȁdak
— lacking friction, not rough
Sicilian:
lisciu
— lacking friction, not rough
Slovak:
hladký
— lacking friction, not rough
Slovene:
gladek
— lacking friction, not rough
Lower Sorbian:
gładki
— lacking friction, not rough
Upper Sorbian:
hładki
— lacking friction, not rough
Spanish:
liso
— lacking friction, not rough
Spanish:
glaxo
— lacking friction, not rough
Spanish:
terso
— lacking friction, not rough
Spanish:
suave
— lacking friction, not rough
Sundanese:
lemes
— lacking friction, not rough
Swahili:
laini
— lacking friction, not rough
Swedish:
jämn
— lacking friction, not rough
Swedish:
len
— lacking friction, not rough
Swedish:
hal
— lacking friction, not rough
Swedish:
slät
— lacking friction, not rough
Swedish:
glatt
— lacking friction, not rough
Tagalog:
makinis
— lacking friction, not rough
Tahitian:
hinuhinu
— lacking friction, not rough
Tarantino:
lisse
— lacking friction, not rough
Telugu:
నున్నటి
(nunnaṭi)
— lacking friction, not rough
Thai:
เรียบ
(rîiap)
— lacking friction, not rough
Tocharian B:
ṣmare
— lacking friction, not rough
Turkish:
pürüzsüz
— lacking friction, not rough
Turkish:
düz
— lacking friction, not rough
Ukrainian:
гладки́й
(hladkýj)
— lacking friction, not rough
Uzbek:
tekis
— lacking friction, not rough
Venetan:
guałivo
— lacking friction, not rough
Venetan:
gałivo
— lacking friction, not rough
Vietnamese:
trơn
— lacking friction, not rough
Vietnamese:
mượt
— lacking friction, not rough
Vilamovian:
głōt
— lacking friction, not rough
Volapük:
smufik
— lacking friction, not rough
Welsh:
llyfn
— lacking friction, not rough
Welsh:
esmwyth
— lacking friction, not rough
Yiddish:
גלאַט
(glat)
— lacking friction, not rough
Zealandic:
glad
— lacking friction, not rough
Bulgarian:
гладък
(gladǎk)
— without difficulty
Chinese Mandarin:
平穩 /平稳
(píngwěn)
— without difficulty
Chinese Mandarin:
順利 /顺利
(shùnlì)
— without difficulty
Czech:
hladký
— without difficulty
Dutch:
vlot
— without difficulty
Finnish:
sujuva
— without difficulty
Finnish:
kitkaton
— without difficulty
French:
doux
— without difficulty
French:
facile
— without difficulty
German:
reibungslos
— without difficulty
German:
problemlos
— without difficulty
German:
glatt
— without difficulty
Greek:
ομαλός
(omalós)
— without difficulty
Hungarian:
zökkenőmentes
— without difficulty
Irish:
réidh
— without difficulty
Italian:
facile
— without difficulty
Italian:
dolce
— without difficulty
Italian:
soffice
— without difficulty
Japanese:
スムース
(sumūsu)
— without difficulty
Macedonian:
ма́зен
(mázen)
— without difficulty
Macedonian:
ле́сен
(lésen)
— without difficulty
Māori:
moani
— without difficulty
Portuguese:
suave
— without difficulty
Russian:
гла́дкий
(gládkij)
— without difficulty
Swahili:
laini
— without difficulty
Swedish:
smidig
— without difficulty
Dutch:
glad
— bland; glib
Finnish:
lipevä
— bland; glib
French:
lisse
— bland; glib
German:
glatt
— bland; glib
Greek:
ήπιος
(ípios)
— bland; glib
Ancient Greek:
λίσπος
(líspos)
— bland; glib
Irish:
séimh
— bland; glib
Italian:
blando
— bland; glib
Portuguese:
suave
— bland; glib
Swahili:
laini
— bland; glib
Chinese Mandarin:
圓滑 /圆滑
(yuánhuá)
— suave; sophisticated