NINCOMPOOP

Yes, NINCOMPOOP is a Scrabble word!

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

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, 24 points. Make Words with Friends your dictionary.Words with FriendsYour dictionary · ChangeValid · 24 points