Is “Stygian” a Scrabble word?
Yes
STYGIAN
Valid in at least one Scrabble dictionary
Valid in these dictionaries
SOWPODS / CSW
Scrabble UK & International
TWL / NWL
Scrabble North America
Large English Dictionary
General English word list
Meaning of Stygian
/ˈstɪdʒ.i.ən/
adjective
1.Dark and gloomy.
2.Infernal or hellish.