Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun zillion

1 sense of zillion

Sense 1
million, billion, trillion, zillion, jillion, gazillion -- (a very large indefinite number (usually hyperbole); "there were millions of flies")
       => large indefinite quantity, large indefinite amount -- (an indefinite quantity that is above the average in size or magnitude)

Antonyms of adj zillion

1 sense of zillion

Sense 1
zillion -- (very large indeterminate number; "a zillion people were there")

INDIRECT (VIA cardinal) -> ordinal -- (being or denoting a numerical order in a series; "ordinal numbers"; "held an ordinal rank of seventh")

Similarity of adj zillion

1 sense of zillion

Sense 1
zillion -- (very large indeterminate number; "a zillion people were there")
       => cardinal (vs. ordinal) -- (being or denoting a numerical quantity but not order; "cardinal numbers")