Same word as zillion:

bags of, endless, gobs, heap, immeasurable, incalculable, infinite, innumerous, jillion, legion, limitless, loads, lots of, many, measureless, mess, mint, mucho, multitudinous, myriad, numberless, oodles, passel of, peck, pile, raft, scads, slew, stack, tidy sum, umpteen, uncountable, uncounted, untold, wad, whole slew, zillion