Antonyms of adj superable

1 sense of superable

Sense 1
conquerable, superable -- (capable of being surmounted or excelled)

INDIRECT (VIA surmountable) -> insurmountable, unsurmountable -- (not capable of being surmounted or overcome; "insurmountable disadvantages")

Similarity of adj superable

1 sense of superable

Sense 1
conquerable, superable -- (capable of being surmounted or excelled)
       => surmountable (vs. insurmountable) -- (capable of being surmounted or overcome; "situations of measurable and surmountable danger")