LIGHTBULB

Yes, LIGHTBULB is a Scrabble word!

Letter values in Scrabble US: L 1, I 1, G 2, H 4, T 1, B 3, U 1, L 1, B 3.L 1 · I 1 · G 2 · H 4 · T 1 · B 3 · U 1 · L 1 · B 3

Is it a valid word?

• Scrabble US: valid, 17 points.Scrabble USYour dictionary · Change (go to the dictionary switch)Valid · 17 points
• Scrabble UK: valid, 17 points. Make Scrabble UK your dictionary.Scrabble UKYour dictionary · ChangeValid · 17 points
• Words with Friends: valid, 22 points. Make Words with Friends your dictionary.Words with FriendsYour dictionary · ChangeValid · 22 points