Antonyms of adj definable

1 sense of definable

Sense 1
definable -- (capable of being defined, limited, or explained; "definable terms"; "definable rules")

INDIRECT (VIA determinable) -> indeterminable, undeterminable -- (not capable of being definitely decided or ascertained)

Similarity of adj definable

1 sense of definable

Sense 1
definable -- (capable of being defined, limited, or explained; "definable terms"; "definable rules")
       => determinable (vs. indeterminable) -- (capable of being determined or limited or fixed; "determinable velocities"; "matters determinable by law")