köken: From Middle High German niunzëhen, from Old High German niunzehan, from Proto-Germanic *newuntehun. Equivalent to neun + zehn. Compare Dutch negentien, English nineteen, Danish nitten.
köken: From Middle Dutch neghentien, from Old Dutch *niguntēn, *niguntien, from Proto-Germanic *newuntehun. Compare West Frisian njoggentjin, German neunzehn, English nineteen, Danish nitten.
köken: Inherited from Sanskrit ऊनविंशति (ūnaviṃśati), for which see Sauraseni Prakrit 𑀅𑀉𑀡𑀯𑀻𑀲 (aüṇavīsa). The gemination of n is phonologically unexpected. Possibly influenced by Punjabi ਉੰਨੀ (unnī).
köken: From Proto-Finnic *ükteksä(n) toicta (kümmentä) (literally “nine of the second decade”). Equivalent to yhdeksän (“nine”) + -toista (“of the second”) (see yhdeksän for more information on its development).