lead-free

The compound 'lead-free' is a modern formation driven by environmental and health concerns. The first element, 'lead', has a straightforward history from its Old English name for the metal, tracing back to a common West Germanic root. The second element, 'free', originates from a Proto-Germanic word meaning 'beloved' or 'not in bondage', which evolved to signify exemption or absence. When combined in the 20th century, the literal construction 'free from lead' logically creates an adjective describing substances, notably petrol and paint, from which this toxic metal has been removed, reflecting a societal shift towards safer materials.

Structure: lead (metal) + free (without) - lead: From Old English 'lēad', of West Germanic origin. The functional role is the base noun referring to the heavy, malleable, bluish-grey metal. - free: From Old English 'frēo', meaning 'not in bondage, acting of one's own will'. In this compound, it functions as a combining form meaning 'without' or 'lacking'.