Words that come from Proto-Italic arðwos

18 words across 7 languages descend from Proto-Italic arðwos — including arduous, arduously, arduousness, unarduous, arduus, arduo, arduo, ardu.

See the etymology of arðwos itself →

English (5)

Italian (3)

French (3)

Spanish (3)

Latin (2)

Galician (1)

Portuguese (1)