Is “Nth” a Scrabble word?
Yes
NTH
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 Nth
/ɛnθ/
noun
1.The item at position n in a sequence.
2.The item in a relatively large but unspecified position in a series.
adjective
1.Occurring at position n in a sequence.
2.Occurring at a relatively large but unspecified position in a series.
Synonyms: umpteenth