Antonyms of adj retrievable

1 sense of retrievable

Sense 1
retrievable -- (capable of being regained especially with effort; "he believed the information was retrievable")

INDIRECT (VIA recoverable) -> unrecoverable, irrecoverable -- (incapable of being recovered or regained)

Similarity of adj retrievable

1 sense of retrievable

Sense 1
retrievable -- (capable of being regained especially with effort; "he believed the information was retrievable")
       => recoverable (vs. unrecoverable) -- (capable of being recovered or regained; "recoverable truth of a past event")