INTERREGNUM

Yes, INTERREGNUM is a Scrabble word!

Letter values in Scrabble US: I 1, N 1, T 1, E 1, R 1, R 1, E 1, G 2, N 1, U 1, M 3.I 1 · N 1 · T 1 · E 1 · R 1 · R 1 · E 1 · G 2 · N 1 · U 1 · M 3

Is it a valid word?

• Scrabble US: valid, 14 points.Scrabble USYour dictionary · Change (go to the dictionary switch)Valid · 14 points
• Scrabble UK: valid, 14 points. Make Scrabble UK your dictionary.Scrabble UKYour dictionary · ChangeValid · 14 points
• Words with Friends: valid, 19 points. Make Words with Friends your dictionary.Words with FriendsYour dictionary · ChangeValid · 19 points