Is “Slouchiest” a Scrabble word?
Yes
SLOUCHIEST
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 Slouchiest
adjective
1.Given to slouching.
“His slouchy posture led to back problems.”