Catalan fer

← Spanish fiero (cognate)

← French fier (cognate)

← Proto-Indo-European *dʰeh₁- (inherited)

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

← Proto-Italic *fakiō (inherited)

← Latin facere (inherited)

← Latin ferus (inherited)

← Occitan fèr (cognate)

← Old Occitan far (inherited)

← Old Occitan (inherited)

← Romanian facio (mention)

→ Catalan fa (mention)

→ Catalan refer (affix)

→ Catalan afer (affix)

→ Catalan desfer (affix)

→ Catalan sabràs dos i dos quants fan (mention)

→ Catalan factible (affix)

→ Catalan satisfer (mention)

→ Catalan contrafer (affix)