Antonyms of adj unifacial

1 sense of unifacial

Sense 1
unifacial -- (having but one principal or specialized surface; "a primitive unifacial flint tool")

INDIRECT (VIA unidirectional) -> bidirectional -- (reactive or functioning or allowing movement in two usually opposite directions)

Similarity of adj unifacial

1 sense of unifacial

Sense 1
unifacial -- (having but one principal or specialized surface; "a primitive unifacial flint tool")
       => unidirectional (vs. bidirectional) -- (operating or moving or allowing movement in one direction only; "a unidirectional flow"; "a unidirectional antenna"; "a unidirectional approach to a problem")