δύο

See also: δυο

Ancient Greek

**Ancient Greek numbers ^(edit)**
	20
← 1	βʹ 2	3 →
Cardinal: δῠ́ο (dúo) Ordinal: δεύτερος (deúteros) Adverbial: δίς (dís) Collective: δῠ́ᾰς (dúas)

Alternative forms

δύ’ (dú’) – apocopic
δύω (dúō) – Epic

Etymology

From Proto-Hellenic *dúwō, from Proto-Indo-European *dwóh₁. Cognates include Sanskrit द्व (dvá), Old Armenian երկու (erku), Latin duo, and Old English twā (English two).

Pronunciation

(5^th BCE Attic) IPA^(key): /dý.o/
(1^st CE Egyptian) IPA^(key): /ˈdy.o/
(4^th CE Koine) IPA^(key): /ˈðy.o/
(10^th CE Byzantine) IPA^(key): /ˈðy.o/
(15^th CE Constantinopolitan) IPA^(key): /ˈði.o/

Numeral

δύο • (dúo) (ordinal δεύτερος, adverbial δίς)

: two

Inflection

Irregular declension of δῠ́ο; δῠοῖν (Attic)

Case / #	Dual	Plural
Nominative	δῠ́ο dúo	δῠ́ο dúo
Genitive	δῠοῖν / δῠεῖν duoîn / dueîn	δῠῶν duôn
Dative	δῠοῖν / δῠεῖν duoîn / dueîn	δῠσῐ́ / δῠσῐ́ν / δῠοῖσῐ dusí(n) / duoîsi
Accusative	δῠ́ο dúo	δῠ́ο dúo
Vocative	δῠ́ο dúo	δῠ́ο dúo
Notes:	This table gives Attic inflectional endings. For declension in other dialects, see Appendix:Ancient Greek dialectal declension. * The genitive and dative dual δῠεῖν (dueîn) is found mainly in later Attic (especially in the feminine).

Various dialects inflected δύο differently. This merely represents a sampling of various inflections. Inflection is normally more redundant than shown here.

Note: δύο sometimes is undeclined.

Derived terms

δυοκαίδεκα (duokaídeka)

Descendants

Greek: δύο (dýo, “two”)

References

δύο in Liddell & Scott (1940) A Greek–English Lexicon, Oxford: Clarendon Press
δύο in Liddell & Scott (1889) An Intermediate Greek–English Lexicon, New York: Harper & Brothers
δύο in Autenrieth, Georg (1891) A Homeric Dictionary for Schools and Colleges, New York: Harper and Brothers
δύο in Bailly, Anatole (1935) Le Grand Bailly: Dictionnaire grec-français, Paris: Hachette
Bauer, Walter et al. (2001) A Greek–English Lexicon of the New Testament and Other Early Christian Literature, Third edition, Chicago: University of Chicago Press
δύο in Cunliffe, Richard J. (1924) A Lexicon of the Homeric Dialect: Expanded Edition, Norman: University of Oklahoma Press, published 1963
δύο in the Diccionario Griego–Español en línea (2006–2019)
δύο in Slater, William J. (1969) Lexicon to Pindar, Berlin: Walter de Gruyter
G1417 in Strong’s Exhaustive Concordance to the Bible, 1979
Woodhouse, S. C. (1910) English–Greek Dictionary: A Vocabulary of the Attic Language‎, London: Routledge & Kegan Paul Limited.
- two idem, page 904.

Greek

**Greek cardinal numbers**
< α΄	β΄	γ΄ >
Cardinal : δύο (dýo) Ordinal : δεύτερος (défteros)

Alternative forms

δυο (dyo)

Etymology

From Ancient Greek δύο (dúo), from Proto-Indo-European *duwó, *duwéh₃ (*dwóh₁).

Pronunciation

IPA^(key): /ˈði.o/
Audio (file)
Hyphenation: δύ‧ο
Homophone: δύω (dýo)

Numeral

δύο • (dýo) (invariable)

two

Usage notes

The stressed form is used to reinforce the number (compare with δυο).

Δύο μπίρες, όχι μία. ― Dýo bíres, óchi mía. ― Two beers, not one.

Coordinate terms

Greek number and measurement

Derived terms

δυόμισι (dyómisi, “half past two, two and a half”)

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