The Spanish word 'indigenismo' comes from combining 'indígena' (meaning 'indigenous') with the suffix '-ismo' (meaning 'doctrine or system'). The word 'indígena' itself comes from Latin 'indigena', which was formed from two Latin elements: 'indu-' meaning 'within or inside' and '-gena' meaning 'born or produced'. Thus, 'indigenismo' literally refers to a system or movement focused on indigenous peoples and their rights, culture, and interests.

A simpler and more common Spanish word that's related to 'indigenismo' is 'indígena', meaning 'indigenous' or 'native'. This is the base word from which 'indigenismo' was formed. You might also recognize the suffix '-ismo' from many other Spanish words like 'socialismo', 'capitalismo', or 'turismo', where it always indicates a system, doctrine, or movement.

In English, you can find related words like 'indigenous' and 'indigeneity', which share the same Latin roots. The English word 'indigenous' is particularly close in both meaning and form to the Spanish 'indígena'. While English doesn't have an exact equivalent to 'indigenismo', we sometimes use terms like 'indigenism' or 'indigenous rights movement' to express similar concepts.