Meaning

noun that which is deserved or owed

noun a payment that is due (e.g., as the price of membership)

adjective owed and payable immediately or on demand

originFrom Middle English dewe, dew, due, from Old French deü (“due”), past participle of devoir (“to owe”), from Latin dēbēre (“to owe”), from dē- (“from”) + habeō (“to have”).

Etymology from Wiktionary, CC BY-SA 3.0