Etymology

Quadrāgintā from Proto-Indo-European *kʷetwr̥̄ḱomt, from earlier *kʷetwr̥-dḱomt ‎(“four-ten”) and ūnus from Old Latin oinos, from Proto-Italic *oinos, from Proto-Indo-European *óynos ‎(“one, single”).

Pronunciation

• (Classical) IPA^(key): /kʷa.draːˈɡin.taː ˈuː.nus/, [kʷa.draːˈɡɪn.taː ˈuː.nʊs]
• (Ecclesiastical) IPA^(key): /kwa.draˈd͡ʒin.ta ˈu.nus/