Is “Unblock” a Scrabble word?
Yes
UNBLOCK
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 Unblock
verb
1.To remove or clear a block or obstruction from.
“We need a plumber to unblock the sink.”
2.To free or make available.
3.In whist, to throw away a high card so as not to interrupt one's partner's long suit.
Synonyms: deobstruct