Antonyms of adj echoless

1 sense of echoless

Sense 1
echoless -- (having or producing no echo; "the echoless darkness")

INDIRECT (VIA nonreflective) -> reflective -- (capable of physically reflecting light or sound; "a reflective surface")

Similarity of adj echoless

1 sense of echoless

Sense 1
echoless -- (having or producing no echo; "the echoless darkness")
       => nonreflective (vs. reflective), nonreflecting -- (not capable of physical reflection)