Antonyms of adj marriageable

1 sense of marriageable

Sense 1
marriageable, nubile -- (of girls or women who are eligible to marry)

INDIRECT (VIA mature) -> immature -- (not yet mature)

Similarity of adj marriageable

1 sense of marriageable

Sense 1
marriageable, nubile -- (of girls or women who are eligible to marry)
       => mature (vs. immature) -- (having reached full natural growth or development; "a mature cell")