Is “Fiftieth” a Scrabble word?
Yes
FIFTIETH
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 Fiftieth
/ˈfɪf.ti.əθ/
noun
1.The person or thing in the fiftieth position.
2.One of fifty equal parts of a whole.
adjective
1.The ordinal form of the number fifty.