Antonyms of adj specular

1 sense of specular

Sense 1
mirrorlike, specular -- (capable of reflecting light like a mirror; "mirrorlike surface of the lake"; "a specular metal")

INDIRECT (VIA reflective) -> nonreflective, nonreflecting -- (not capable of physical reflection)

Similarity of adj specular

1 sense of specular

Sense 1
mirrorlike, specular -- (capable of reflecting light like a mirror; "mirrorlike surface of the lake"; "a specular metal")
       => reflective (vs. nonreflective) -- (capable of physically reflecting light or sound; "a reflective surface")