köken: From Middle High German ahzehen, from Old High German ahtozehan, from Proto-Germanic *ahtōutehun. Equivalent to acht + zehn. Compare Dutch achttien, West Frisian achttjin, English eighteen, Danish atten.
köken: From Middle Dutch *achtetien, *achttien, from Old Dutch *ahtotēn, *ahtotien, from Proto-Germanic *ahtōutehun. Compare West Frisian achttjin, German achtzehn, English eighteen, Danish atten.
köken: Etymology tree Proto-Slavic *osmь na desęte Polish osiemnaście Inherited from Proto-Slavic *osmь na desęte. By surface analysis, osiem (“eight”) + -naście (“-teen”).
köken: From Proto-Finnic *kaktëksa(n) toicta (kümmentä) (literally “eight of the second decade”). Equivalent to kahdeksan (“eight”) + -toista (“of the second”) (see kahdeksan for more information on its development).