Antonyms of adj 45

1 sense of 45

Sense 1
forty-five, 45, xlv -- (being five more than forty)

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

Similarity of adj 45

1 sense of 45

Sense 1
forty-five, 45, xlv -- (being five more than forty)
       => cardinal (vs. ordinal) -- (being or denoting a numerical quantity but not order; "cardinal numbers")