Etymologically

Etymology and origin of the Romanian word zău

Confidence
Probable
Formation
Inherited
First attested
1563 Coresi's Praxiu More words from the 16th century
Inherited from
Latin deus
Ultimate origin
Latin deus
Etymology tree
inherited borrowed derived
Latin deus
French dieu
Italian dio
Romanian zău
Romanian zeu
Spanish dios
From the same root
Latin dea ← deus
Latin deitās ← deus
French adieu ← dieu
Italian addio ← dio
Italian oddio ← dio

Pronunciation

Forms

zău[1] Old texts also write dzău: „Eu, dzău, numai doi cai am avut acum” “I, by God, had only two horses then” (a document of 1657).[2] In Maramureș the form is dzău, in Lăpuș zo.[3] In the 19th century the word was often written zeu, like the noun.[4]

Etymology

It is inherited from Latin deus (“god”), used in oaths as “by God”.[5][4][6][1] Ciorănescu calls it a doublet of zeu “god”, which also comes from the Latin word.[5] The Academy dictionaries are more cautious: MDA2 marks the origin as unknown and compares zeu, and the DLR only compares it.[7][2] Wiktionary gives both explanations: the Latin word itself, or a variant of that noun which kept the oath use.[1] Tiktin takes the interjection as a whole oath cut down to its first word, and compares German Gott ist mein Zeuge (“God is my witness”).[4] For Maramureș, Ștef connects the local form with the oath „jur pe Dum'nedzău” “I swear by God”, and the form of Lăpuș with the regional name of God.[3]

Aromanian keeps the word only in the phrase niți dzău (“not a word”).[5][8] Its Romance cognates include Italian dio, Portuguese deus, French dieu, Catalan déu and Spanish dios.[5][9] The Latin noun comes from Old Latin deivos and Proto-Indo-European *deywós, a derivative of *dyew- (“sky, heaven”).[1][10]

Earliest recorded meaning

Tiktin dates the first record to 1563, in Coresi's Praxiu.[4] MDA2 and the DLR begin with the Palia de la Orăștie of 1581, where the word already strengthens a reproach: „N-ai neci lăsat să sărut feciorii și featele meale, dzău, nebuneaște ai făcut” “you did not even let me kiss my sons and my daughters; truly, you have acted foolishly”.[2][7]

Semantic evolution

From the start the word backs up a statement, much like “truly”.[2] A manuscript of the early 17th century renders the Gospel formula “verily I say unto you” with it: „Zău zic voo că cine va creade în mine și în cuvintele meale, nu va muri în veaci” “truly I tell you that whoever believes in me and in my words will never die”.[2][4]

In folk poetry a zice zău means “to swear”.[4][6] Formulas such as nu știu, zău came to express doubt or wonder, and with a request the word means “please”.[7][6] Modern dictionaries label it popular.[7][11]

Timeline

  • 1563 – the first record, in Coresi's Praxiu.[4]
  • 1581 – dzău in the Palia de la Orăștie.[7][2]
  • early 17th century – zău, zic voo “truly I say unto you” in a Gospel manuscript.[2][4]
  • 1657 – dzău in a private document.[2]
  • 1682 – the word in the Moscow Slavonic–Romanian lexicon.[12]
  • 19th century – the spelling zeu is common.[4]

Meanings

Interjection

  1. Used to back up a statement or a denial: “I swear”, “upon my word”; often reinforced by așa.[6][7][1]
  2. Really, certainly, of course.[6][1]
  3. In formulas such as nu știu, zău: expressing doubt or wonder, “I wonder whether”.[6][7]
  4. Please: adds weight to a request or an urging.[6][7][1]

Usage notes

Common phrases are zău așa “I mean it”, a zice zău “to swear” and ba (nu) zău “on the contrary, I assure you”.[6][1] Ciorănescu notes the western Transylvanian greeting zo te cuște, which Drăganu traced to a Latin blessing “God keep you”.[5]

References

  1. ^ a b c d e f g h i Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d e f g h Academia Română (1965–2010), Dicționarul limbii române (DLR), serie nouă, tom I–XIX, București: Editura Academiei Române, p. s.v. zău
  3. ^ a b Ștef, Dorin (2021), Dicționar de regionalisme și arhaisme din județul Maramureș, 3rd ed., Baia Mare, p. s.v. zău
  4. ^ a b c d e f g h i Tiktin, Hariton (2000–2005), Rumänisch-deutsches Wörterbuch, 3rd ed., revised by Paul Miron and Elsa Lüder, 3 vols., Cluj-Napoca: Clusium, p. s.v. zău
  5. ^ a b c d e Ciorănescu, Alexandru (1958–1966), Diccionario etimológico rumano, La Laguna: Universidad de La Laguna (Romanian ed.: Dicționarul etimologic al limbii române, București: Saeculum, 2001), p. s.v. zău
  6. ^ a b c d e f g h DEX (2009), Dicționarul explicativ al limbii române [Explanatory dictionary of the Romanian language], Bucharest: Editura Univers Enciclopedic, p. 1219
  7. ^ a b c d e f g h Academia Română, Institutul de Lingvistică „Iorgu Iordan – Al. Rosetti” (2010), Micul dicționar academic, 2nd ed., 4 vols., București: Univers Enciclopedic Gold, p. 2, 1545
  8. ^ Pascu, Giorge (1925), Dictionnaire étymologique macédoroumain, 2 vols. (I: Les éléments latins et romans; II: Les éléments grecs, turcs, slaves, albanais, germaniques, magyars, néologismes, créations immédiates, obscurs), Iași: Cultura Națională, p. 1, 80
  9. ^ Meyer-Lübke, Wilhelm (1935), Romanisches etymologisches Wörterbuch, 3rd ed., Heidelberg: Winter, p. 2610
  10. ^ de Vaan, Michiel (2008), Etymological Dictionary of Latin and the other Italic Languages, Leiden Indo-European Etymological Dictionary Series 7, Leiden; Boston: Brill
  11. ^ Academia Română, Institutul de Lingvistică „Iorgu Iordan – Al. Rosetti” (2002), Noul dicționar explicativ al limbii române, București: Litera Internațional, p. s.v. zău
  12. ^ Ungureanu, Mădălina; Gînsac, Ana-Maria; Moruz, Alexandru (eds.), eRomLex: The First Romanian Bilingual Dictionaries (17th century), Iași: Universitatea „Alexandru Ioan Cuza”, https://scriptadacoromanica.ro, p. s.v. zău

Related etymologies

  • apă · also from Latin
  • bun · also from Latin
  • unde · also from Latin
  • veni · also from Latin
  • noi · also from Latin
  • bine · also from Latin
  • un · also from Latin
  • și · also from Latin
Cite this entry

“Zău.” Etymologically, 11 Nov. 2026, etymologically.com/ro/z%C4%83u. Accessed 11 Nov. 2026.

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