IMPENETRABLE

Yes, IMPENETRABLE is a Scrabble word!

Letter values in Scrabble US: I 1, M 3, P 3, E 1, N 1, E 1, T 1, R 1, A 1, B 3, L 1, E 1.I 1 · M 3 · P 3 · E 1 · N 1 · E 1 · T 1 · R 1 · A 1 · B 3 · L 1 · E 1

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, 23 points. Make Words with Friends your dictionary.Words with FriendsYour dictionary · ChangeValid · 23 points