decimonono

== Italian == === Adjective === decimonono (invariable) alternative form of diciannovesimo == Spanish == === Adjective === decimonono (feminine decimonona, masculine plural decimononos, feminine plural decimononas) alternative form of decimonoveno === Further reading === “decimonono”, in Diccionario de la lengua española [Dictionary of the Spanish Language] (in Spanish), online version 23.8.1, Royal Spanish Academy [Spanish: Real Academia Española], 15 December 2025