INTERREGNUM /ˌɪntəɹˈɹɛɡnəm/ Scrabble 14 Words With Friends 19 Definition noun the time between two reigns, governments, etc.. Examples “The Sasanian Interregnum of 628-632” See all 322 words you can make from INTERREGNUM → 11-letter words Words starting with I Words ending with M ← Unscramble different letters