Is “Squattest” a Scrabble word?
Yes
SQUATTEST
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 Squattest
adjective
1.Relatively short or low, and thick or broad.
2.Sitting on the hams or heels; sitting close to the ground; cowering; crouching.