predecessorn.[L. praedecessor; prae before + decessor one who withdraws from the province he has governed, a retiring officer (with reference to his successor), a predecessor, fr. decedere: cf. F. prdcesseur. See Decease.] One who precedes; one who has preceded another in any state, position, office, etc.; one whom another follows or comes after, in any office or position.()A prince who was as watchful as his predecessor had been over the interests of the state. (Prescott.)