The Spanish word 'opíparo' comes from the Latin 'opiparus' meaning 'sumptuous' or 'abundant'. This Latin word was formed by combining two elements: 'ops' meaning 'wealth' or 'resources', and 'parare' meaning 'to prepare or equip'. So literally, something that is 'opíparo' was prepared or equipped with wealth/resources, leading to the meaning of something being lavish or sumptuous.

While 'opíparo' is not commonly used in everyday Spanish, it shares some distant etymology with the more common Spanish word 'preparar' (to prepare), which comes from the same Latin root 'parare'. Another related word is 'opulento' (opulent), which comes from the Latin 'ops' (wealth) that forms part of 'opíparo'.

English speakers might recognize the connection to words like 'prepare' and 'preparation', which come from the same Latin root 'parare'. The 'op-' part relating to wealth can be seen in English words like 'opulent' and 'copious', though these connections are more distant. The word 'operate' also ultimately derives from 'ops' (work, labor, power), showing how the concept of resources or power evolved in different directions in English.