Antonyms of adj criterional

1 sense of criterional

Sense 1
criterial, criterional -- (serving as a basis for evaluation)

INDIRECT (VIA standard) -> nonstandard -- (not standard; not accepted as a model of excellence; "a nonstandard text")

Similarity of adj criterional

1 sense of criterional

Sense 1
criterial, criterional -- (serving as a basis for evaluation)
       => standard (vs. nonstandard) -- (established or well-known or widely recognized as a model of authority or excellence; "a standard reference work"; "the classical argument between free trade and protectionism")