French roux

← Old French ros (inherited)

← Proto-Indo-European *h₁rewdʰ- (derived)

← Latin russus (inherited)

→ English roux (borrowed)

→ English Rousseau (mention)

→ English rubaboo (derived)

→ Catalan ros (cognate)

→ French rouquin (suffix)

→ French Rousseau (affix)

→ French roussâtre (suffix)

→ Portuguese roxo (cognate)