French vassal

← Gaulish *wassos (derived)

← Proto-Celtic *wastos (derived)

← Welsh gwas (cognate)

← Old French vassal (derived)

← Latin vassus (derived)

← Old Irish foss (cognate)

→ Danish vasal (borrowed)

→ Esperanto vasalo (borrowed)

→ French vassalité (suffix)

→ French vassalique (suffix)

→ Russian вассал (borrowed)