number/beinˈtjuno/
twenty-one
Etymology tree Proto-Indo-European *dwóh₁ Proto-Indo-European *dwi- Proto-Indo-European *déḱm̥ Proto-Indo-European *(d)wi-dḱm̥t-ih₁ Proto-Italic *wīkəntī Latin vīgintī Old Spanish veynte Spanish veinte Spanish y Proto-Indo-European *ís? Proto-Indo-European *h₁óynos Proto-Italic *oinos Old Latin oinos Latin ūnus Old Spanish uno Spanish uno Spanish veintiuno From veinte + y + uno.