Is “Muckiest” a Scrabble word?
Yes
MUCKIEST
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 Muckiest
adjective
1.Covered in muck.
2.Obscene, pornographic.
“a mucky magazine”
Synonyms: dirty, filthy, muddy, X-rated, adult, blue