deputy

1. One appointed as the substitute of another, and empowered to act for them, in their name or their behalf; a substitute in office

   As the deputy store manager, he is able to fire staff.

2. A person employed to install and remove props, brattices, etc. and to clear gas, for the safety of the miners.
3. (France): A member of the Chamber of Deputies, formerly called Corps Législatif
4. (Ireland): a member of Dáil Éireann, or the title of a member of Dáil Éireann. (Normally capitalised in both cases)

   At today's meeting, Deputy Ryan will speak on local issues.

5. (United States): a law enforcement officer who works for the county sheriff's office; a deputy sheriff or sheriff's deputy; the entry level rank in such an agency

   The sheriff's deputies took the suspect into custody.

verb

To deputise