Is SUBSTITUTION_CLASS a valid Scrabble word?
No, substitution_class is NOT valid for Scrabble
US/CA UK/EUNo, is NOT valid for Words With Friends
Invalid WordSUBSTITUTION_CLASS is not a valid Words With Friends word.
No, is NOT valid for WordFeud
Invalid WordSUBSTITUTION_CLASS is not a valid WordFeud word.