Is “Triumphalism” a Scrabble word?
Yes
TRIUMPHALISM
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 Triumphalism
noun
1.The attitude or belief that a particular doctrine, culture, or social system, particularly a religious or political one, is superior and that it will or should triumph over all others.