Chargeless comes from charge + -less. Charge derives from Old French chargier ('to load'), from Late Latin carricāre ('to load a wagon'), from Latin carrus ('wagon, cart'), of Celtic origin. The historical trail runs through chargier in Old French, carricāre in Latin, and carrus in Latin. Morphologically, chargeless is transparent: it draws on charge + -less. Used as an adjective, chargeless now means "free of cost or free of electrical charge", so the present definition can be read against the older forms and meanings. The same lexical family is also visible in related forms such as charge. The result is a borrowed or transmitted form whose modern spelling carries a compact record of its route into English.