Answer: zillion

AnswerCrossword Clue
ZILLIONGinormous amount
ZILLIONGinormous quantity
ZILLIONCountless, with "a"
ZILLIONUmpteen, with "a"
ZILLIONBig number
ZILLIONBig, big number
ZILLIONUnreal number
ZILLIONWhole slew of
ZILLIONHyperbolic figure?
ZILLIONVery large indefinite "number"
ZILLIONHyperbolic figure
ZILLIONGinormous number
zillionextremely large, indeterminate number
zillionmany millions