interregnum /in-tər-regˈnəm/

1. The time between two reigns
2. The time between the cessation of one and the establishment of another government
3. Any breach of continuity in order, etc

• reachable
• reached
• reacher
• reachers
• reaches
• reaching
• reachless
• reach-me-down
• reach-me-downs
• reacquaint
• reacquaintance
• reacquaintances
• reacquainted
• reacquainting
• reacquaints
• reacquire
• reacquired
• reacquires
• reacquiring
• react
• reactance
• reactances
• reactant
• reactants
• reacted