WHEREUPON

Yes, WHEREUPON is a Scrabble word!

Letter values in Scrabble US: W 4, H 4, E 1, R 1, E 1, U 1, P 3, O 1, N 1.W 4 · H 4 · E 1 · R 1 · E 1 · U 1 · P 3 · O 1 · N 1

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, 19 points. Make Words with Friends your dictionary.Words with FriendsYour dictionary · ChangeValid · 19 points