Is “Slyer” a Scrabble word?
Yes
SLYER
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 Slyer
adjective
1.Artfully cunning; secretly mischievous; wily.
2.(having a positive sense) Dexterous in performing an action, so as to escape notice
3.Done with, and marked by, artful and dexterous secrecy; subtle
“a sly trick”
Synonyms: artful, cautious, nimble, shrewd, skillful, crafty