HARMONIOUS

Yes, HARMONIOUS is a Scrabble word!

Letter values in Scrabble US: H 4, A 1, R 1, M 3, O 1, N 1, I 1, O 1, U 1, S 1.H 4 · A 1 · R 1 · M 3 · O 1 · N 1 · I 1 · O 1 · U 1 · S 1

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: valid, 17 points. Make Words with Friends your dictionary.Words with FriendsYour dictionary · ChangeValid · 17 points