Antonyms of adj provable

1 sense of provable

Sense 1
demonstrable, provable -- (capable of being demonstrated or proved; "obvious lies"; "a demonstrable lack of concern for the general welfare"; "practical truth provable to all men"- Walter Bagehot)

INDIRECT (VIA obvious) -> unobvious -- (not immediately apparent; "in mathematical science connections are exhibited which...are extremely unobvious"- A.N.Whitehead)

Similarity of adj provable

1 sense of provable

Sense 1
demonstrable, provable -- (capable of being demonstrated or proved; "obvious lies"; "a demonstrable lack of concern for the general welfare"; "practical truth provable to all men"- Walter Bagehot)
       => obvious (vs. unobvious) -- (easily perceived by the senses or grasped by the mind; "obvious errors")