Words that come from Proto-Italic rēōr

400 words across 46 languages descend from Proto-Italic rēōr — including reason, rate, reasonable, ratio, rational, reasoning, reasonably, rating.

See the etymology of rēōr itself →

English (168)

Latin (35)

Italian (28)

French (25)

Spanish (14)

Irish (12)

Catalan (11)

German (11)

Serbo-Croatian (11)

Portuguese (10)

Old French (8)

Norwegian Bokmål (6)

Hungarian (5)

Norwegian Nynorsk (5)

Middle English (4)

Galician (3)

Crimean Tatar (3)

Latvian (3)

Norman (3)

Welsh (2)

Asturian (2)

Russian (2)

Finnish (2)

Thai (2)

Romanian (2)

Medieval Latin (2)

Late Latin (2)

Aragonese (1)

Extremaduran (1)

Old Occitan (1)

Bulgarian (1)

Friulian (1)

Hiligaynon (1)

Ladin (1)

Venetian (1)

Turkish (1)

Dalmatian (1)

Middle Irish (1)

Japanese (1)

Cebuano (1)

Polish (1)

Vilamovian (1)

Papiamentu (1)

Old Portuguese (1)

Anglo-Norman (1)

New Latin (1)