Is “Gamut” a Scrabble word?
Yes
GAMUT
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 Gamut
/ˈɡæm.ət/
noun
1.A (normally) complete range.
2.All the notes in the musical scale.
3.All the colours available to a device such as a monitor or printer.