Antonyms of adj inconceivable

1 sense of inconceivable

Sense 1
impossible, inconceivable, out of the question, unimaginable -- (totally unlikely)

INDIRECT (VIA unthinkable) -> thinkable -- (capable of being conceived or imagined or considered)

Similarity of adj inconceivable

1 sense of inconceivable

Sense 1
impossible, inconceivable, out of the question, unimaginable -- (totally unlikely)
       => unthinkable (vs. thinkable) -- (incapable of being conceived or considered)