very numerous or great.

unable to be calculated; beyond calculation.

incapable of being forecast or predicted; undeterminable.

uncertain; unsure.

adjective

calculable , countable , limited , measurable

adjective

boundless , capricious , chancy , enormous , erratic , fluctuant , iffy * , immense , incomputable , inestimable , infinite , innumerable , jillion , measureless , no end of , no end to , numberless , uncertain , uncountable , unfixed , unforeseen , unpredictable , unreckonable , untold , vast , whimsical , without number , zillion , countless , immeasurable , limitless