Is “Slacked” a Scrabble word?
Yes
SLACKED
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 Slacked
verb
1.To slacken.
2.To mitigate; to reduce the strength of.
3.To lose cohesion or solidity by a chemical combination with water; to slake.
“Lime slacks.”