ὄγδοος

See also: όγδοος

Ancient Greek

**Ancient Greek ordinal numbers**
< ζ’	η’	θ’ >
Cardinal : ὀκτώ (oktṓ) Ordinal : ὄγδοος (ógdoos) Adverbial : ὀκτάκις (oktákis)

Ordinal of ὀκτώ (oktṓ, “eight”). The term derives from earlier *ὄγδοϝος (*ógdowos), itself perhaps from earlier Proto-Indo-European *oḱtṓwos, from Proto-Indo-European *oḱtṓw. The voicing is possibly due to analogy after ἕβδομος (hébdomos).^[1]

ὄγδοος • (ógdoos) m (feminine ὀγδόη, neuter ὄγδοον); first/second declension

First and second declension of ὄγδοος; ὀγδόη; ὄγδοον (Attic)

Number	Singular			Dual			Plural
Case/Gender	Masculine	Feminine	Neuter	Masculine	Feminine	Neuter	Masculine	Feminine	Neuter
Nominative	ὄγδοος ógdoos	ὀγδόη ogdóē	ὄγδοον ógdoon	ὀγδόω ogdóō	ὀγδόᾱ ogdóā	ὀγδόω ogdóō	ὄγδοοι ógdooi	ὄγδοαι ógdoai	ὄγδοᾰ ógdoă
Genitive	ὀγδόου ogdóou	ὀγδόης ogdóēs	ὀγδόου ogdóou	ὀγδόοιν ogdóoin	ὀγδόαιν ogdóain	ὀγδόοιν ogdóoin	ὀγδόων ogdóōn	ὀγδόων ogdóōn	ὀγδόων ogdóōn
Dative	ὀγδόῳ ogdóōi	ὀγδόῃ ogdóēi	ὀγδόῳ ogdóōi	ὀγδόοιν ogdóoin	ὀγδόαιν ogdóain	ὀγδόοιν ogdóoin	ὀγδόοις ogdóois	ὀγδόαις ogdóais	ὀγδόοις ogdóois
Accusative	ὄγδοον ógdoon	ὀγδόην ogdóēn	ὄγδοον ógdoon	ὀγδόω ogdóō	ὀγδόᾱ ogdóā	ὀγδόω ogdóō	ὀγδόους ogdóous	ὀγδόᾱς ogdóās	ὄγδοᾰ ógdoă
Vocative	ὄγδοε ógdoe	ὀγδόη ogdóē	ὄγδοον ógdoon	ὀγδόω ogdóō	ὀγδόᾱ ogdóā	ὀγδόω ogdóō	ὄγδοοι ógdooi	ὄγδοαι ógdoai	ὄγδοᾰ ógdoă
Derived forms	Adverb			Comparative			Superlative
Derived forms	—			—			ὀγδοώτᾰτος ogdoṓtătos
Notes:	This table gives Attic inflectional endings. For declension in other dialects, see Appendix:Ancient Greek dialectal declension.

“ὄγδοος”, in Liddell & Scott (1940), A Greek–English Lexicon, Oxford: Clarendon Press
“ὄγδοος”, in Liddell & Scott (1889), An Intermediate Greek–English Lexicon, New York: Harper & Brothers
ὄγδοος in Bailly, Anatole (1935), Le Grand Bailly: Dictionnaire grec-français, Paris: Hachette
ὄγδοος in Cunliffe, Richard J. (1924), A Lexicon of the Homeric Dialect: Expanded Edition, Norman: University of Oklahoma Press, published 1963
“ὄγδοος”, in Slater, William J. (1969), Lexicon to Pindar, Berlin: Walter de Gruyter
G3590 in Strong, James (1979), Strong’s Exhaustive Concordance to the Bible
Woodhouse, S. C. (1910), English–Greek Dictionary: A Vocabulary of the Attic Language‎^[1], London: Routledge & Kegan Paul Limited.
- eighth idem, page 263.
Beekes, Robert S. P. (2010), “ὄγδοος”, in Etymological Dictionary of Greek (Leiden Indo-European Etymological Dictionary Series; 10), with the assistance of Lucien van Beek, Leiden, Boston: Brill, →ISBN, page 1044

^ Fred Muller & J.H. Thiel, W. den Boer, Wolters' Handwoordenboek Grieks-Nederlands, "ὄγδοος", 1933 (11th ed., 1994 print), page 499.