ἔφεδρος ἔφ-εδρος, ον ἕδρα sitting or seated upon, c. gen., λεόντων ἔφεδρε, of Cybele, Soph.; ἔφ. ἵππου Eur. sitting by, at, or near, τῶν πηδαλίων, of a pilot, Plat.; also c. dat., Eur.: absol. close at hand, Soph. posted in support or reserve, Eur. lying by, of a third combatant (pugilist or wrestler), who sits by to fight the conqueror, Pind., Ar., Xen.:— μόνος ὢν ἔφεδρος δισσοῖς, i. e. one against two, with no one to take his place if beaten, Aesch. a successor, Hdt.