Is “Unquenchable” a Scrabble word?
Yes
UNQUENCHABLE
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 Unquenchable
adjective
1.That cannot be quenched.
“After a twelve-mile run in the hot sun, his thirst felt unquenchable.”