GARGANTUAN

Yes, GARGANTUAN is a Scrabble word!

Letter values in Scrabble US: G 2, A 1, R 1, G 2, A 1, N 1, T 1, U 1, A 1, N 1.G 2 · A 1 · R 1 · G 2 · A 1 · N 1 · T 1 · U 1 · A 1 · N 1

Is it a valid word?

• Scrabble US: valid, 12 points.Scrabble USYour dictionary · Change (go to the dictionary switch)Valid · 12 points
• Scrabble UK: valid, 12 points. Make Scrabble UK your dictionary.Scrabble UKYour dictionary · ChangeValid · 12 points
• Words with Friends: valid, 17 points. Make Words with Friends your dictionary.Words with FriendsYour dictionary · ChangeValid · 17 points