EXTENSIVELY

Yes, EXTENSIVELY is a Scrabble word!

Letter values in Scrabble US: E 1, X 8, T 1, E 1, N 1, S 1, I 1, V 4, E 1, L 1, Y 4.E 1 · X 8 · T 1 · E 1 · N 1 · S 1 · I 1 · V 4 · E 1 · L 1 · Y 4

Is it a valid word?

• Scrabble US: valid, 24 points.Scrabble USYour dictionary · Change (go to the dictionary switch)Valid · 24 points
• Scrabble UK: valid, 24 points. Make Scrabble UK your dictionary.Scrabble UKYour dictionary · ChangeValid · 24 points
• Words with Friends: valid, 26 points. Make Words with Friends your dictionary.Words with FriendsYour dictionary · ChangeValid · 26 points