Is “Solus” a Scrabble word?
Yes
SOLUS
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 Solus
adjective
1.Alone, unaccompanied (as a stage direction)