Is “Vast” a Scrabble word?
Yes
VAST
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 Vast
/vɑːst/
noun
1.A vast space.
adjective
1.Very large or wide (literally or figuratively).
“The Sahara desert is vast.”
2.Very great in size, amount, degree, intensity, or especially extent.
3.Waste; desert; desolate; lonely.