köken: Inherited from Old French oitante, uitante, from Latin octāgintā, variant of octōgintā (“eighty”), from Proto-Indo-European *oktōḱomt, from earlier *oḱto(w)-dḱomt (“eight-ten”). Cognate with Jèrriais huiptante, Valencian Catalan huitanta. Doublet of octante.
köken: Inherited from Old Spanish ochaenta, from Latin octāgintā, variant of octōgintā (“eighty”), from Proto-Indo-European *oktōḱomt, from earlier *oḱto(w)-dḱomt (“eight-ten”).
köken: Inherited from Chagatai [Term?], from Karakhanid [Term?], from Proto-Turkic [Term?]. Cognate with with Turkish seksen, Kazakh сексен (seksen), Chuvash [Term?] etc.
köken: From Old Galician-Portuguese oytenta, oyteenta, oitaenta, from Latin octāgintā, variant of octōgintā (“eighty”), from Proto-Indo-European *oktōḱomt, from earlier *oḱto(w)-dḱomt (“eight-ten”).
köken: First attested as Late Old Korean 逸頓 in the Jīlín lèishì (鷄林類事 / 계림유사), 1103. In the hangul script, first attested in the Seokbo sangjeol (釋譜詳節 / 석보상절), 1447, as Middle Korean 여든〮 (Yale: yètún).
köken: From the numeral nyolc (“eight”) + van, where van cannot be attested as an independent word (it is not the verb van). Compare also hatvan (“60”) as well as negyven (“40”), ötven (“50”), hetven (“70”), and kilencven (“90”). Possibly related to Finnish moni (see the other cognates there), deriving from Proto-Finno-Permic *mone, *mune. For the supposed sound change in Hungarian (m > v), compare név…