Antonyms of adj unascertainable

1 sense of unascertainable

Sense 1
unascertainable, undiscoverable -- (not able to be ascertained; resisting discovery)

INDIRECT (VIA indeterminable) -> determinable -- (capable of being determined or limited or fixed; "determinable velocities"; "matters determinable by law")

Similarity of adj unascertainable

1 sense of unascertainable

Sense 1
unascertainable, undiscoverable -- (not able to be ascertained; resisting discovery)
       => indeterminable (vs. determinable), undeterminable -- (not capable of being definitely decided or ascertained)