Answer: interregnum

AnswerCrossword Clue
INTERREGNUMPeriod between kings.
interregnumthe interval between two reigns; also, any breach of continuity in an order.
interregnum(Latin) the time during which a throne is vacant between two reigns
interregnumA period when normal government is suspended, esp. between successive reigns or regimes
interregnumAn interval or pause