The word 'stringed' is a straightforward English formation, combining the native Germanic noun 'string' with the adjectival suffix '-ed'. The root 'string' traces back to Proto-Germanic strangiz, meaning "cord" or "line," which itself may derive from the Proto-Indo-European root strenk-, meaning "tight" or "narrow." The suffix '-ed,' used to form adjectives from nouns (as in 'talented' or 'winged'), originates from Old English '-ede,' indicating possession or provision. Thus, the literal construction "having strings" directly and logically yields the modern musical and descriptive sense, specifying an instrument equipped with strings.

Structure: string (cord) + ed (adjective suffix) - string: From Old English streng, of Germanic origin; related to German Strang. The functional role is the core noun/root meaning a thin cord. - ed: A suffix of Germanic origin, forming adjectives from nouns, meaning "having" or "provided with".