# duo
## English
### Etymology

* PIE word
* *dwóh₁
From French duo or Italian duo, from Latin duo (“two”), from Proto-Italic *duō, from Proto-Indo-European *dwóh₁. Doublet of two, which was inherited via Proto-Germanic.

### Pronunciation

* (UK) IPA: /ˈdjuː.əʊ/, /ˈdʒuː.əʊ/
* Audio (Southern England):(file)
* (US) IPA: /ˈdu.oʊ/, /ˈdju.oʊ/
* Rhymes: -uːəʊ

### Noun

duo (plural duos)
* Two people who work or collaborate together as partners; especially, those who perform music together.
* Any pair of people.
* Any cocktail consisting of a spirit and a liqueur.
* A meal with two paired components.
    The duo of pork consisted of a smoked sausage and a shoulder joint.
* A song in two parts; a duet.
** 2009, Roger T. Dean, The Oxford Handbook of Computer Music:I noticed early on, in playing a duo with a violinist, that when a very cheesy synthesized violin sound plays in counterpoint with a real violin, it can quite convincingly seem as if two violins are playing.

#### Synonyms

* (pair of two people): couple, pair, twosome; see also Thesaurus:duo

#### Derived terms

* comedy duo
* dufoil
* lip duo
* super-duo

#### Related terms

* duet

#### Translations
### See also

* trio
* quartet
* Thesaurus:number

### Anagrams

* udo, oud, ODU

## Central Dusun
### Alternative forms

* duwo

### Etymology

From Proto-Malayo-Polynesian *duha, from Proto-Austronesian *duSa. Cognate with Coastal Kadazan duvo.

### Numeral

duo
* two

## Czech
### Pronunciation

* IPA: [ˈduo]
* Hyphenation: duo

### Noun

duo n
* duet
    Synonym: duet

#### Related terms

* dualismus
* dualista
* dualistický
* dualita
* duál
* duální

### Further reading

* “duo”, in Příruční slovník jazyka českého (in Czech), 1935–1957
* “duo”, in Slovník spisovného jazyka českého (in Czech), 1960–1971, 1989

## Dutch
### Etymology

From French duo or Italian duo, from Latin duo (“two”).

### Pronunciation

* IPA: /ˈdy(ʋ)oː/
* Audio:(file)
* Hyphenation: duo

### Noun

duo n (plural duo's, diminutive duootje n)
* twosome

#### Synonyms

* tweetal

#### Derived terms

* cabaretduo
* duobaan
* duomoeder
* duoraadslid
* duovader
* zangduo

#### Related terms

* duet

### Anagrams

* oud

## Esperanto
### Etymology

From du +‎ -o.

### Pronunciation

* Audio:(file)
* IPA: [ˈduo]
* Rhymes: -uo
* Hyphenation: du‧o

### Noun

duo (accusative singular duon, plural duoj, accusative plural duojn)
* twosome, pair, couple
    Synonyms: duopo, paro
* the digit or figure two

### See also

Playing cards in Esperanto · ludkartoj (layout · text) :
| aso | duo | trio | kvaro | kvino | seso | sepo |
| oko | naŭo | deko | fanto, bubo | damo | reĝo | ĵokero |

## Finnish
### Etymology

< Italian duo.

### Pronunciation

* IPA: /ˈdu(ː)o/, [ˈdu(ː)o̞]
* Rhymes: -uo
* Hyphenation: duo

### Noun

duo
* duo (twosome of musicians performing together)
* Synonym of kaksikko (“twosome, pair”) (often with a modifier)
    Kokkiduo Erkki ja Klaara ovat kumppaneita niin keittiössä kuin elämässään.The chef duo Eric and Clara are partners in the kitchen as well as in their lives.

#### Declension

Possessive forms of duo (Kotus type 1/valo, no gradation) :
first-person singular possessor
singular
plural
nominative
duoni
duoni
accusative
nom.
duoni
duoni
gen.
duoni
genitive
duoni
duojeni
partitive
duoani
duojani
inessive
duossani
duoissani
elative
duostani
duoistani
illative
duooni
duoihini
adessive
duollani
duoillani
ablative
duoltani
duoiltani
allative
duolleni
duoilleni
essive
duonani
duoinani
translative
duokseni
duoikseni
abessive
duottani
duoittani
instructive
comitative
—duoineni
second-person singular possessor
singular
plural
nominative
duosi
duosi
accusative
nom.
duosi
duosi
gen.
duosi
genitive
duosi
duojesi
partitive
duoasi
duojasi
inessive
duossasi
duoissasi
elative
duostasi
duoistasi
illative
duoosi
duoihisi
adessive
duollasi
duoillasi
ablative
duoltasi
duoiltasi
allative
duollesi
duoillesi
essive
duonasi
duoinasi
translative
duoksesi
duoiksesi
abessive
duottasi
duoittasi
instructive
comitative
—duoinesi
first-person plural possessor
singular
plural
nominative
duomme
duomme
accusative
nom.
duomme
duomme
gen.
duomme
genitive
duomme
duojemme
partitive
duoamme
duojamme
inessive
duossamme
duoissamme
elative
duostamme
duoistamme
illative
duoomme
duoihimme
adessive
duollamme
duoillamme
ablative
duoltamme
duoiltamme
allative
duollemme
duoillemme
essive
duonamme
duoinamme
translative
duoksemme
duoiksemme
abessive
duottamme
duoittamme
instructive
comitative
—duoinemme
second-person plural possessor
singular
plural
nominative
duonne
duonne
accusative
nom.
duonne
duonne
gen.
duonne
genitive
duonne
duojenne
partitive
duoanne
duojanne
inessive
duossanne
duoissanne
elative
duostanne
duoistanne
illative
duoonne
duoihinne
adessive
duollanne
duoillanne
ablative
duoltanne
duoiltanne
allative
duollenne
duoillenne
essive
duonanne
duoinanne
translative
duoksenne
duoiksenne
abessive
duottanne
duoittanne
instructive
comitative
—duoinenne
third-person possessor
singular
plural
nominative
duonsa
duonsa
accusative
nom.
duonsa
duonsa
gen.
duonsa
genitive
duonsa
duojensa
partitive
duoaan duoansa
duojaan duojansa
inessive
duossaan duossansa
duoissaan duoissansa
elative
duostaan duostansa
duoistaan duoistansa
illative
duoonsa
duoihinsa
adessive
duollaan duollansa
duoillaan duoillansa
ablative
duoltaan duoltansa
duoiltaan duoiltansa
allative
duolleen duollensa
duoilleen duoillensa
essive
duonaan duonansa
duoinaan duoinansa
translative
duokseen duoksensa
duoikseen duoiksensa
abessive
duottaan duottansa
duoittaan duoittansa
instructive
comitative
—duoineen duoinensa :

#### Derived terms

* duoraitiovaunu
* viuluduo

### Further reading

* “duo”, in Kielitoimiston sanakirja [Dictionary of Contemporary Finnish]‎ (in Finnish) (online dictionary, continuously updated), Kotimaisten kielten keskuksen verkkojulkaisuja 35, Helsinki: Kotimaisten kielten tutkimuskeskus (Institute for the Languages of Finland), 2004–, retrieved 2023-07-02

## French
### Etymology

Borrowed from Italian duo. Doublet of deux.

### Pronunciation

* IPA: /dɥo/
* Audio:(file)

### Noun

duo m (plural duos)
* duo (combination of two things)
* (music) duet (a musical composition for two performers)

#### Descendants

* → Romanian: duo

#### See also

* solo, trio

### Further reading

* “duo”, in Trésor de la langue française informatisé [Digitized Treasury of the French Language], 2012.

### Anagrams

* d’où

## Interlingua
### Etymology

Borrowed from Latin duo (“two”).

### Numeral

duo
* two

## Italian
### Etymology

From Latin duo (“two”).

### Pronunciation

* IPA: /ˈdu.o/
* Rhymes: -uo
* Hyphenation: dù‧o

### Numeral

duo (invariable)
* (obsolete) Alternative form of due

### Noun

duo m (invariable)
* (obsolete) Alternative form of due
* duo
    Synonym: duetto
* (music) duet
    Synonym: duetto

#### Related terms

* due

#### Descendants

* → English: duo
* → Finnish: duo
* → French: duo
** → Romanian: duo
* → Norwegian:
** Norwegian Bokmål: duo
** Norwegian Nynorsk: duo
* → Polish: duo
* → Portuguese: duo
* → Swedish: duo

### Further reading

* Prose della volgar lingua, 3.II

### Anagrams

* udo-

## Latin
### Alternative forms

* Symbol: II

### Etymology

* PIE word
* *dwóh₁
From Proto-Italic *duō, from Proto-Indo-European *dwóh₁ (which was inflected as a dual). Cognates include Ancient Greek δύο (dúo), Sanskrit द्व (dvá), Old Church Slavonic дъва (dŭva), and Old English twā (whence English two).

### Pronunciation

* (Classical Latin) IPA: /ˈdu.o/, [ˈd̪uɔ]
* (modern Italianate Ecclesiastical) IPA: /ˈdu.o/, [ˈd̪uːo]

### Numeral

duo (feminine duae, neuter duo); numeral, plural only
* two; 2
** 27 BCE – 25 BCE, Titus Livius, Ab Urbe Condita 45:Dixit duas res ei rubori fuisse.He said that two things had abashed him.
** 405 CE, Jerome, Vulgate Zacharias.4.12:et respondi secundo et dixi ad eum quid sunt duae spicae olivarum quae sunt iuxta duo rostra aurea in quibus sunt suffusoria ex auroAnd I answered again, and said unto him, What be these two olive branches which through the two golden pipes empty the golden oil out of themselves?
** 1500, Desiderius Erasmus, Adagia:Ne Hercules quidem adversus duos."Not even Hercules fights against two."

#### Usage notes

* See Appendix:Latin cardinal numbers.

#### Declension

Numeral, plural only.
Note: The masculine and neuter genitive of duo can alternatively be duum (also spelt duûm).

#### Derived terms

* duabus sellis sedeo

#### Related terms

* duālis
* duplex
* duplicō
* duplus

#### Descendants

* Balkan Romance:
** Aromanian: doi m, dao f, dau f, dauã f, doauã f
** Istro-Romanian: doi
** Megleno-Romanian: doi, doauă
** Romanian: doi m, două f
* Dalmatian Romance:
** Dalmatian: doi
** Istriot: dui, duj
* Italo-Romance:
** Corsican: dui m, duie f
** Italian: due, duo, ⇒ duetto (see there for further descendants)
** Neapolitan: dduje
** Sicilian: dui
* Padanian:
** Rhaeto-Romance
*** Friulian: doi, dôs
*** Ladin: doi
*** Romansch: dus m, duas f
** Gallo-Italic
*** Piedmontese: doi
*** Venetan: do m, due f
* Gallo-Romance:
** Franco-Provençal: doux m, doves f
** Old French: deus
*** Middle French: deus
**** French: deux
**** Norman: deux, daeux
*** Walloon: deus
* Occitano-Romance:
** Catalan: dos m, dues f
** Old Occitan: dos m, doas f, doi
*** Occitan: dos m, doas f, dui, doi, (Aranese) dus
* Ibero-Romance:
** Aragonese: dos
** Old Leonese:
*** Asturian: dos
*** Mirandese: dous m, dues f
** Old Galician-Portuguese: dous m, duas f
*** Fala: dois
*** Galician: dous
*** Portuguese: dois, dous (dated)
*** Galician: dúas
*** Portuguese: duas
** Old Spanish: dos, dúas f
*** Ladino: dos
*** Spanish: dos
* Insular Romance:
** Sardinian: duos, duas
* Constructed languages:
** → Esperanto: du
** → Ido: du
** → Interlingua: duo

#### See also

* Appendix:Latin cardinal numbers

### References

* “duo”, in Charlton T. Lewis and Charles Short (1879) A Latin Dictionary, Oxford: Clarendon Press
* “duo”, in Charlton T. Lewis (1891) An Elementary Latin Dictionary, New York: Harper & Brothers
* "duo", in Charles du Fresne du Cange’s Glossarium Mediæ et Infimæ Latinitatis (augmented edition with additions by D. P. Carpenterius, Adelungius and others, edited by Léopold Favre, 1883–1887)
* duo in Gaffiot, Félix (1934) Dictionnaire illustré latin-français, Hachette.
* Carl Meißner, Henry William Auden (1894) Latin Phrase-Book‎, London: Macmillan and Co. to divide into two factions: in duas partes discedere (Sall. Iug. 13. 1) to form two legions: efficere duas legiones

## Mandarin
### Romanization

duo (duo$^5$ / duo$^0$, Zhuyin ˙ㄉㄨㄛ)
* Hanyu Pinyin reading of 𦕰
duo
* Nonstandard spelling of duō.
* Nonstandard spelling of duó.
* Nonstandard spelling of duǒ.
* Nonstandard spelling of duò.

#### Usage notes

* Transcriptions of Mandarin into the Latin script often do not distinguish between the critical tonal differences employed in the Mandarin language, using words such as this one without indication of tone.

## Minangkabau
### Etymology

From Proto-Malayic *dua, from Proto-Malayo-Polynesian *duha, from Proto-Austronesian *duSa. False cognate of Latin duo.

### Numeral

duo.
* two

### Further reading

* Blust, Robert; Trussel, Stephen; et al. (2023) “*duSa”, in the CLDF dataset from The Austronesian Comparative Dictionary (2010–), →DOI

## Norwegian Bokmål
### Etymology

From Italian duo.

### Noun

duo m (definite singular duoen, indefinite plural duoer, definite plural duoene)
* a duo (a group of two entertainers, or a piece of music for two musical instruments (also known as a duet))

## Norwegian Nynorsk
### Etymology

From Italian duo.

### Noun

duo m (definite singular duoen, indefinite plural duoar, definite plural duoane)
* a duo (as above)

## Polish
### Etymology

Borrowed from Italian duo, from Latin duo, from Proto-Italic *duō, from Proto-Indo-European *dwóh₁. Doublet of dwa (“two”).

### Pronunciation

* IPA: /ˈdu.ɔ/
* Rhymes: -uɔ
* Syllabification: du‧o

### Noun

duo n (indeclinable)
* (music) duo (group of two musicians)
    Synonym: duet
* (music) duo (piece of music written for two musicians)
    Synonym: duet
* duo (group of two people or things)
    Synonym: duet

### Further reading

* duo in Polish dictionaries at PWN

## Portuguese
### Etymology

Borrowed from Italian duo.

### Pronunciation

* (Brazil) IPA: /ˈdu.u/
* (Brazil) IPA: /ˈdu.u/
** (Southern Brazil) IPA: /ˈdu.o/
* (Portugal) IPA: /ˈdu.u/, /ˈdu.ɔ/

### Noun

duo m (plural duos)
* duo
    Synonym: dupla

## Romanian
### Etymology

Borrowed from French duo.

### Noun

duo n (plural duouri)
* duet

#### Declension
## Swedish
### Etymology

From Italian duo.

### Noun

duo c
* a duo

#### See also

* bisittare
* duett
* följeslagare
* parhäst
* radarpar
* vapendragare

### References

* duo in Svensk ordbok (SO)
* duo in Svenska Akademiens ordlista (SAOL)
* duo in Svenska Akademiens ordbok (SAOB)

## Welsh
### Etymology

du (“black”) +‎ -o

### Pronunciation

* (North Wales) IPA: /ˈdɨː.ɔ/
* (South Wales) IPA: /ˈdiː.ɔ/

### Verb

duo (first-person singular present duaf)
* (intransitive)
** to become black, to blacken (also figuratively)
** to grow dark
    Synonym: nosi
* (transitive) to make black, to blacken (also figuratively)

#### Conjugation

| | singular | singular | singular | plural | plural | plural | impersonal | impersonal |
| | first | second | third | first | second | third | impersonal | impersonal |
| present indicative/future | duaf | dui | dua | duwn | duwch | duant | duir |
| imperfect (indicative/subjunctive)/ conditional | duwn | duit | duai | duem | duech | duent | duid |
| preterite | duais | duaist | duodd | duasom | duasoch | duasant | duwyd |
| pluperfect | duaswn | duasit | duasai | duasem | duasech | duasent | duasid, duesid |
| present subjunctive | duwyf | duych | duo | duom | duoch | duont | duer |
| imperative | — | dua | dued | duwn | duwch | duent | duer |
| verbal noun | duo | duo | duo | duo | duo | duo | duo |
| verbal adjectives | duedig duadwy | duedig duadwy | duedig duadwy | duedig duadwy | duedig duadwy | duedig duadwy | duedig duadwy |
| Inflected colloquial forms | singular | singular | singular | plural | plural | plural |
| Inflected colloquial forms | first | second | third | first | second | third |
| future | dua i, duaf i | dui di | duith o/e/hi, duiff e/hi | duwn ni | duwch chi | duan nhw |
| conditional | duwn i, duswn i | duet ti, duset ti | duai fo/fe/hi, dusai fo/fe/hi | duen ni, dusen ni | duech chi, dusech chi | duen nhw, dusen nhw |
| preterite | duais i, dues i | duaist ti, duest ti | duodd o/e/hi | duon ni | duoch chi | duon nhw |
| imperative | — | dua | — | — | duwch | — |
| Note: All other forms are periphrastic, as usual in colloquial Welsh. |||||||

### Mutation

Note: Certain mutated forms of some words can never occur in standard Welsh. All possible mutated forms are displayed for convenience.

### References

* R. J. Thomas, G. A. Bevan, P. J. Donovan, A. Hawke et al., editors (1950–present), “duo”, in Geiriadur Prifysgol Cymru Online (in Welsh), University of Wales Centre for Advanced Welsh & Celtic Studies

## West Coast Bajau
### Etymology

From Proto-Malayo-Polynesian *duha, from Proto-Austronesian *duSa.

### Numeral

duo
* two

## Yoruba
### Etymology

Contraction of dúró.

### Pronunciation

* IPA: /dú.ó/

### Verb

dúó
* (Ondo) Ondo form of dúró (“to wait”)