UNDERLAIN

Yes, UNDERLAIN is a Scrabble word!

Letter values in Scrabble US: U 1, N 1, D 2, E 1, R 1, L 1, A 1, I 1, N 1.U 1 · N 1 · D 2 · E 1 · R 1 · L 1 · A 1 · I 1 · N 1

Is it a valid word?

• Scrabble US: valid, 10 points.Scrabble USYour dictionary · Change (go to the dictionary switch)Valid · 10 points
• Scrabble UK: valid, 10 points. Make Scrabble UK your dictionary.Scrabble UKYour dictionary · ChangeValid · 10 points
• Words with Friends: valid, 14 points. Make Words with Friends your dictionary.Words with FriendsYour dictionary · ChangeValid · 14 points