köken: From Middle High German sibenzehen, from Old High German sibunzehan, from Proto-Germanic *sebuntehun. Equivalent to sieben + zehn. Compare Dutch zeventien, West Frisian santjin, English seventeen, Danish sytten.
köken: From Middle Dutch seventien, from Old Dutch *sivontēn, *sivontien, from Proto-Germanic *sebuntehun. Compare English seventeen, West Frisian santjin, German siebzehn, Danish sytten.
köken: Etymology tree Proto-Slavic *sedmь na desęte Polish siedemnaście Inherited from Proto-Slavic *sedmь na desęte. By surface analysis, siedem (“seven”) + -naście (“-teen”).
köken: Inherited from Sauraseni Apabhramsa सत्तरह (sattaraha), from Prakrit 𑀲𑀢𑁆𑀢𑀭𑀲 (sattarasa), from Sanskrit सप्तदश (saptádaśa). The geminate -tt- is likely semi-learned.
köken: From Proto-Finnic *säic'en toicta (kümmentä) (literally “seven of the second decade”). Equivalent to seitsemän (“seven”) + -toista (“of the second”) (see seitsemän for more information on its development).