The Collaborative International Dictionary
Disprovable
Disprovable \Dis*prov"a*ble\, a.
Capable of being disproved or refuted.
--Boyle.
Wiktionary
disprovable
a. Capable of being disproved.
Usage examples of "disprovable".
Another reason for the policy of secrecy, seemingly farfetched but not totally disprovable, was that there might actually be berserker hardware right here on the base, disguised as something else.
They seem ready to jump to a conclusion, but nothing is disprovable yet.