Antonyms of adj 8th

1 sense of 8th

Sense 1
eighth, 8th -- (coming next after the seventh and just before the ninth in position)

INDIRECT (VIA ordinal) -> cardinal -- (being or denoting a numerical quantity but not order; "cardinal numbers")

Similarity of adj 8th

1 sense of 8th

Sense 1
eighth, 8th -- (coming next after the seventh and just before the ninth in position)
       => ordinal (vs. cardinal) -- (being or denoting a numerical order in a series; "ordinal numbers"; "held an ordinal rank of seventh")