Is “Unscrew” a Scrabble word?
Yes
UNSCREW
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 Unscrew
verb
1.To loosen a screw or thing by turning it.
“I'm having some trouble unscrewing the lid of this jar.”