Is “Slacker” a Scrabble word?
Yes
SLACKER
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 Slacker
/ˈslækɚ/
noun
1.One who procrastinates or is lazy.
2.A person lacking a sense of direction in life; an underachiever.
3.A person who seeks to avoid military service.