agent alternate alternative analogy archon backup chancellor change changeling chief executive chief executive officer comparison copy counterfeit dean deputy double dummy equal equivalent ersatz exchange executive executive director executive officer executive secretary fake fill-in ghost ghostwriter imitation locum tenens magistrate makeshift management managing director metaphor metonymy next best thing officer official personnel phony pinch hitter prefect president prexy provost proxy relief replacement representative reserves ringer second string secondary secretary sign spares stand-in sub substituent substitute substitution succedaneum superseder supplanter surrogate symbol synecdoche the administration third string token treasurer understudy utility player vicar vice-chairman vice-chancellor vice-consul vice-director vice-governor vice-king vice-legate vice-master vice-premier vice-queen vice-regent vice-warden vicegerent viceroy warden