Here are seven French nouns ending in -ou in the singular form, which change to -oux in the plural form:
- Chou (cabbage) – Choux (cabbages)
- Hibou (owl) – Hiboux (owls)
- Bijou (jewel) – Bijoux (jewels)
- Caillou (pebble) – Cailloux (pebbles)
- Pou (lice) – Poux (lice)
- Genou (knee) – Genoux (knees)
- Joujou (toy) – Joujoux (toys)
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