Is “Octuple” a Scrabble word?
Yes
OCTUPLE
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 Octuple
/ɒkˈtuː.pəl/
noun
1.An eightfold amount or number
verb
1.To increase eightfold.
2.To increase or multiply something by eight.
adjective
1.Eightfold