köken: From Middle High German du, duo, dū, from Old High German dū (akin to Old Saxon thū and English thou), itself from Proto-West Germanic *þū, from Proto-Germanic *þū, from Proto-Indo-European *túh₂.
Used to indicate possession. The comitative case of a noun requires a possessive suffix, and the genitive of personal pronoun is normally not used with it. · Appended to a genitive-requiring postposition, when its main word is te. · Appended in the participle in participial phrases when the main clause and the participial phrase have the same subject "you".
köken: From Proto-Finnic *-ndak (originally the oblique/plural possessive ending with a second-person plural possessor), from Proto-Uralic *-nta[t/k]. The vowel is influenced by the second-person plural pronouns like te. Cognates include Moksha and Erzya -нк (-nk).
köken: From domnia, from domn, from Latin dominus (“master”) + voastră, from Latin voster, vostra (“your”), thus initially meaning "your lordship". Compare similar constructions in Spanish usted (“you”) from vuestra merced (cf. also vuecencia), Portuguese você (“you”), Catalan vostè, etc.
Etimoloji
From earlier jelui, from jij (“you”) and lui (“people”).