interregent
nounEtymology From inter- + regent.
1
Obsolete A person who holds royal functions during an interregnum; an interim regent.
- The Interregent [interrex] having called a generall parliament1659, T[itus] Livius [i.e., Livy], “(please specify the book number)”, in Philemon Holland, transl., The Romane Historie […], London: […] W. Hunt, for George Sawbridge, […], →OCLC: