Acting as substitute for another; SYN. proxy.

ETYM French député, from Late Lat. deputatus. Related to Depute.
1. A member of the lower chamber of a legislative assembly (such as in France).
2. A person appointed to represent or act on behalf of others; SYN. surrogate.
3. An assistant with power to act when his superior is absent; SYN. lieutenant.
4. Someone authorized to exercise the powers of sheriff in emergencies; SYN. deputy sheriff.