OPTIMISTIC

Yes, OPTIMISTIC is a Scrabble word!

Letter values in Scrabble US: O 1, P 3, T 1, I 1, M 3, I 1, S 1, T 1, I 1, C 3.O 1 · P 3 · T 1 · I 1 · M 3 · I 1 · S 1 · T 1 · I 1 · C 3

Is it a valid word?

• Scrabble US: valid, 16 points.Scrabble USYour dictionary · Change (go to the dictionary switch)Valid · 16 points
• Scrabble UK: valid, 16 points. Make Scrabble UK your dictionary.Scrabble UKYour dictionary · ChangeValid · 16 points
• Words with Friends: valid, 19 points. Make Words with Friends your dictionary.Words with FriendsYour dictionary · ChangeValid · 19 points