UNCERTAINLY

Yes, UNCERTAINLY is a Scrabble word!

Letter values in Scrabble US: U 1, N 1, C 3, E 1, R 1, T 1, A 1, I 1, N 1, L 1, Y 4.U 1 · N 1 · C 3 · E 1 · R 1 · T 1 · A 1 · I 1 · N 1 · L 1 · Y 4

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, 20 points. Make Words with Friends your dictionary.Words with FriendsYour dictionary · ChangeValid · 20 points