GRUMBLER

Yes, GRUMBLER is a Scrabble word!

Letter values in Scrabble US: G 2, R 1, U 1, M 3, B 3, L 1, E 1, R 1.G 2 · R 1 · U 1 · M 3 · B 3 · L 1 · E 1 · R 1

Is it a valid word?

• Scrabble US: valid, 13 points.Scrabble USYour dictionary · Change (go to the dictionary switch)Valid · 13 points
• Scrabble UK: valid, 13 points. Make Scrabble UK your dictionary.Scrabble UKYour dictionary · ChangeValid · 13 points
• Words with Friends: valid, 18 points. Make Words with Friends your dictionary.Words with FriendsYour dictionary · ChangeValid · 18 points