Home Misspellings How to spell interregum? Interregum or interregnum? Which one is correct? by hersey November 20, 2018 Reading Time: 0min, 7sc + - 0 Interregum or interregnum Which one is correct? You can find the answer below. Incorrect Interregum Correct Interregnum You can find more information about Interregnum word here. Rate this post Correct spelling of InterregumHow do you spell Interregum