French sommeil

← Proto-Indo-European *swépnos (inherited)

← Latin *somniculum (mention)

← Latin somnus (inherited)

← Latin -culum (mention)

→ French somme (mention)

→ French sommeiller (suffix)

→ Haitian Creole sòmey (derived)

→ Mauritian Creole somey (derived)

→ Portuguese sono (cognate)