The Spanish word 'pelado' meaning 'peeled' or 'bald' comes from the verb 'pelar' ('to peel' or 'to remove hair') combined with the past participle suffix '-ado'. The verb 'pelar' itself derives from Latin 'pilare' meaning 'to remove hair', which was formed from the Latin noun 'pilus' ('hair') and the verbal suffix '-are'.

The evolution from Latin to Spanish shows a common sound change where the Latin 'i' became 'e' in Spanish. The meaning expanded from specifically removing hair to include the more general sense of peeling or removing an outer layer.

Several common Spanish words share this root, including 'pelo' (hair), 'peluca' (wig), and the verb 'pelar' itself. The connection is clear: 'pelo' is the hair itself, 'pelar' is the action of removing hair or peeling, and 'pelado' is the state of being hairless or peeled.

While not immediately obvious, this word shares an ancient root with English words like 'depilatory' (a substance used to remove hair) and 'pilus' (a technical term for a hair-like structure). These words preserve the original Latin 'pil-' root more clearly than the Spanish forms.