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

• make much of
• make no bones about
• make no bones of
• make no difference
• make no doubt
• make no odds
• make no scruple
• make nothing of
• make of
• make off
• make old bones
• make on
• make one's bow
• make oneself at home
• make oneself scarce
• make one's excuses
• make one's lucky
• make one's manners
• make one's mark
• make one's name
• make one's peace with
• make one's toes curl
• make one's way
• make or break
• make-or-break