SUBSHAFT

Yes, SUBSHAFT is a Scrabble word!

Letter values in Scrabble US: S 1, U 1, B 3, S 1, H 4, A 1, F 4, T 1.S 1 · U 1 · B 3 · S 1 · H 4 · A 1 · F 4 · T 1

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