INDEFATIGABLE

Yes, INDEFATIGABLE is a Scrabble word!

Letter values in Scrabble US: I 1, N 1, D 2, E 1, F 4, A 1, T 1, I 1, G 2, A 1, B 3, L 1, E 1.I 1 · N 1 · D 2 · E 1 · F 4 · A 1 · T 1 · I 1 · G 2 · A 1 · B 3 · L 1 · E 1

Is it a valid word?

• Scrabble US: valid, 20 points.Scrabble USYour dictionary · Change (go to the dictionary switch)Valid · 20 points
• Scrabble UK: valid, 20 points. Make Scrabble UK your dictionary.Scrabble UKYour dictionary · ChangeValid · 20 points
• Words with Friends: valid, 24 points. Make Words with Friends your dictionary.Words with FriendsYour dictionary · ChangeValid · 24 points