Is “Championship” a Scrabble word?
Yes
CHAMPIONSHIP
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 Championship
/ˈtʃæmpi.ənʃɪp/
noun
1.A competition to determine a champion, especially the final of a series of competitions.
2.The position of champion, or winner.
3.Defense or support of some cause.
“His championship of civil rights eventually bore fruit.”