Catalan aigua

← Spanish agua (cognate)

← Galician auga (cognate)

← Proto-Indo-European *h₂ekʷeh₂ (inherited)

← Proto-Italic *akʷā (inherited)

← Latin aqua (inherited)

← Occitan aiga (cognate)

← Old Occitan aigua (inherited)

← Old Occitan aiga (mention)

→ Catalan enaiguar (affix)

→ Catalan paraigua (affix)

→ Catalan aiguardent (mention)

→ Catalan aiguamoll (compound)

→ Catalan aigualir (affix)

→ Catalan aiguat (affix)

→ Catalan aiguaneu (compound)

→ Catalan aiguabarreig (compound)

→ Catalan desaiguar (affix)

→ Catalan aigüera (affix)

→ Spanish agua (cognate)

→ French eau (cognate)

→ Occitan aiga (cognate)

→ Portuguese água (cognate)