Is “Colonist” a Scrabble word?
Yes
COLONIST
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 Colonist
/ˈkɒlənɪst/
noun
1.A founder of a colony.
2.A member of a colony.