# δύω
## Ancient Greek
### Pronunciation

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

### Etymology 1

From Proto-Indo-European *dew- (“to go in, enter”). Cognates include rare Vedic Sanskrit उपादुत्य (upādútya, “put on”). See also δείελος (deíelos, “of the afternoon or evening”).

#### Verb

δύω • (dúō)
* to cause to sink, to plunge
* to get into, to enter

##### Alternative forms

* δύνω (dúnō)

##### Derived terms

* ἄδυτος (ádutos)
* ἀναδύομαι (anadúomai)
* ἀποδύω (apodúō)
* δύσις (dúsis)
* ἐκδύω (ekdúō)
* ἐνδύω (endúō)
* καταδύω (katadúō)
* τρωγλοδύτης (trōglodútēs)
* ψαμμοδύτης (psammodútēs)

### Etymology 2

Ultimately from Proto-Indo-European *dwóh₁ (“two”), with δύο (dúo) coming from the undeclined variant *d(u)wó.

#### Numeral

δύω • (dúō)
* (chiefly Epic) Alternative form of δύο (dúo, “two”)

### References

* ↑ Beekes, Robert S. P. (2010) “δύω 2”, in Etymological Dictionary of Greek (Leiden Indo-European Etymological Dictionary Series; 10), with the assistance of Lucien van Beek, Leiden, Boston: Brill, →ISBN, pages 361-2
* ↑ Beekes, Robert S. P. (2010) “δύω 1”, in Etymological Dictionary of Greek (Leiden Indo-European Etymological Dictionary Series; 10), with the assistance of Lucien van Beek, Leiden, Boston: Brill, →ISBN, page 361

### Further reading

* “δύω”, in Liddell & Scott (1940) A Greek–English Lexicon, Oxford: Clarendon Press
* “δύω”, in Liddell & Scott (1889) An Intermediate Greek–English Lexicon, New York: Harper & Brothers
* “δύω”, in Autenrieth, Georg (1891) A Homeric Dictionary for Schools and Colleges, New York: Harper and Brothers
* δύω 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
* δύω in Cunliffe, Richard J. (1924) A Lexicon of the Homeric Dialect: Expanded Edition, Norman: University of Oklahoma Press, published 1963
* δύω in the Diccionario Griego–Español en línea (2006–2025)

## Greek
### Etymology

From Ancient Greek δύω.

### Pronunciation

* IPA: [ˈði.o]
    Audio:(file)
* Hyphenation: δύ‧ω
* Homophone: δύο (dýo)

### Verb

δύω • (dýo) (past έδυσα, passive —)
* to set, go down (sun, stars, etc)
    Synonym: βασιλεύω (vasilévo)
    Antonym: ανατέλλω (anatéllo)
* (figuratively) to decline
    Synonyms: φθίνω (fthíno), παρακμάζω (parakmázo)

#### Related terms

And see their derivatives
* αναδύομαι (anadýomai, “surface, emerge”)
* ανάδυση f (anádysi, “surfacing”)
* ανεπένδυτος (anepéndytos, “uninvested”)
* αντιδυτικός (antidytikós, “antioccidental”)
* απεκδύομαι (apekdýomai, “divest, renounce”)
* αποδυτήριο n (apodytírio, “locker room, dressing room”) (sports)
* αυτοδύτης m (aftodýtis)
* διείσδυση f (dieísdysi, “penetrate”)
* διεισδύω (dieisdýo, “penetration”)
* δύση f (dýsi, “west; sunset”)
* δύτης m (dýtis, “diver”)
* δυτικός (dytikós, “western, occidental”)
* εισδύω (eisdýo, “penetrate”)
* εκδύω (ekdýo, “undress”) (formal)
* ένδυση f (éndysi, “clothing”)
* ενδύω (endýo, “dress”) (formal)
* επένδυση f (epéndysi, “investment; coating”)
* επενδύω (ependýo, “invest; coat”)
* καταδύομαι (katadýomai, “dive”)
* κατάδυση f (katádysi, “diving”)
* λωποδυσία f (lopodysía, “robbery, thievery”)
* λωποδύτης m (lopodýtis, “thief, crook”)
* παρενδυσία f (parendysía, “transvestism”)
* προς δυσμάς (pros dysmás, “westbound”)
* ρακένδυτος (rakéndytos, “shabbily-clothed”)
* τρωγλοδύτης m (troglodýtis, “dwelling in a cave”)
* υποδύομαι (ypodýomai, “impersonate; play a role -of actors-”)
Also see → γδύνω (gdýno)