Antonyms of adj knowable

1 sense of knowable

Sense 1
knowable (vs. unknowable), cognizable, cognisable, cognoscible -- (capable of being known)

unknowable (vs. knowable) -- (not knowable; "the unknowable mysteries of life")
        => transcendent -- (beyond and outside the ordinary range of human experience or understanding; "the notion of any transcendent reality beyond thought")

Similarity of adj knowable

1 sense of knowable

Sense 1
knowable (vs. unknowable), cognizable, cognisable, cognoscible -- (capable of being known)