Antonyms of adj foreseeable

1 sense of foreseeable

Sense 1
foreseeable -- (capable of being anticipated; "foreseeable costs were well within the budget")

INDIRECT (VIA predictable) -> unpredictable -- (not capable of being foretold)

Similarity of adj foreseeable

1 sense of foreseeable

Sense 1
foreseeable -- (capable of being anticipated; "foreseeable costs were well within the budget")
       => predictable (vs. unpredictable) -- (capable of being foretold)