Is “Claggiest” a Scrabble word?
Yes
CLAGGIEST
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 Claggiest
adjective
1.(of mud, tar, glue or the like) Sticky or tacky.
2.(specifically, of a roof in a mine) Adhesive, having coal clinging to it.
Synonyms: agglutinative, tenacious