Is “Quarterfinal” a Scrabble word?
Yes
QUARTERFINAL
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 Quarterfinal
noun
1.One of the four competitions in a knockout tournament whose winners go on to play in the two semifinals.
Synonyms: last eight, quarter