COSEISMIC

Yes, COSEISMIC is a Scrabble word!

Letter values in Scrabble US: C 3, O 1, S 1, E 1, I 1, S 1, M 3, I 1, C 3.C 3 · O 1 · S 1 · E 1 · I 1 · S 1 · M 3 · I 1 · C 3

Is it a valid word?

• Scrabble US: valid, 15 points.Scrabble USYour dictionary · Change (go to the dictionary switch)Valid · 15 points
• Scrabble UK: valid, 15 points. Make Scrabble UK your dictionary.Scrabble UKYour dictionary · ChangeValid · 15 points
• Words with Friends: not a valid word. Make Words with Friends your dictionary.Words with FriendsYour dictionary · ChangeNot a valid word