ADDITIVITY

Yes, ADDITIVITY is a Scrabble word!

Letter values in Scrabble US: A 1, D 2, D 2, I 1, T 1, I 1, V 4, I 1, T 1, Y 4.A 1 · D 2 · D 2 · I 1 · T 1 · I 1 · V 4 · I 1 · T 1 · Y 4

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, 18 points. Make Words with Friends your dictionary.Words with FriendsYour dictionary · ChangeValid · 18 points