Words that come from Old French -us

400 words across 12 languages descend from Old French -us — including vigorous, marvellous, vigorously, desirous, joyous, courageous, marvelous, outrageous.

See the etymology of -us itself →

French (257)

English (81)

Ido (35)

Italian (7)

Esperanto (6)

Middle French (3)

Danish (3)

Dutch (2)

Swedish (2)

Greek (2)

Hungarian (1)

Russian (1)