The Spanish word 'chauvinismo' comes from the French word 'chauvinisme', which means 'excessive patriotism'. This French term originated from the surname of Nicolas Chauvin, a legendary French soldier known for his extreme patriotism and devotion to Napoleon Bonaparte. The Spanish word was formed by adapting the French term and adding the Spanish suffix '-ismo', which is used to form nouns indicating doctrines or beliefs.

While 'chauvinismo' itself is a relatively specific term, you can recognize the common Spanish suffix '-ismo' which appears in many other Spanish words like 'socialismo' (socialism), 'optimismo' (optimism), and 'capitalismo' (capitalism). This suffix consistently indicates a system of beliefs or doctrines.

The English word 'chauvinism' is directly related to 'chauvinismo', as both come from the same French source 'chauvinisme'. While the term originally referred specifically to excessive nationalism, in English it has expanded to mean any form of extreme and unreasoning partisanship toward a group to which one belongs, especially when accompanied by prejudice against other groups. This is most commonly seen in the phrase 'male chauvinism', referring to excessive belief in male superiority.