DUMBFOUND

Yes, DUMBFOUND is a Scrabble word!

Letter values in Scrabble US: D 2, U 1, M 3, B 3, F 4, O 1, U 1, N 1, D 2.D 2 · U 1 · M 3 · B 3 · F 4 · O 1 · U 1 · N 1 · D 2

Is it a valid word?

• Scrabble US: valid, 18 points.Scrabble USYour dictionary · Change (go to the dictionary switch)Valid · 18 points
• Scrabble UK: valid, 18 points. Make Scrabble UK your dictionary.Scrabble UKYour dictionary · ChangeValid · 18 points
• Words with Friends: valid, 23 points. Make Words with Friends your dictionary.Words with FriendsYour dictionary · ChangeValid · 23 points