The Spanish word 'ornamentado' (meaning 'ornamented') comes from combining the noun 'ornamento' ('ornament') with the past participle suffix '-ado'. 'Ornamento' itself derives from the Latin word 'ornamentum', meaning 'ornament' or 'equipment'. The Latin 'ornamentum' was formed by combining the verb 'ornare' ('to adorn, equip') with the suffix '-mentum' (indicating a result or means).

This etymology shows how the word developed from the basic concept of adorning or equipping something, to a noun meaning the decorative elements themselves, and finally to an adjective describing something that has been decorated.

Some related Spanish words that might be more familiar to Spanish learners include 'ornar' (to adorn), which is a simpler verb form directly from Latin 'ornare', and 'adorno' (decoration, ornament), which shares the same Latin root. These words all relate to the concept of decoration and embellishment.

English speakers can easily connect 'ornamentado' to several familiar English words like 'ornament', 'ornamental', and 'ornamentation'. All these words share the same Latin ancestor 'ornamentum'. The connection is clear both in spelling and meaning, as they all relate to decoration and embellishment. Even the English word 'adorn' is related, coming from Latin 'adornare', a variant of 'ornare'.