Antonyms of adj echoic

2 senses of echoic

Sense 1
echoic (vs. nonechoic), imitative, onomatopoeic, onomatopoeical, onomatopoetic -- ((of words) formed in imitation of a natural sound; "onomatopoeic words are imitative of noises"; "it was independently developed in more than one place as an onomatopoetic term"- Harry Hoijer)

nonechoic (vs. echoic) -- (not echoic or imitative of sound)

Sense 2
echoic, echolike -- (like or characteristic of an echo)

INDIRECT (VIA reflected) -> unreflected -- ((especially of incident sound or light) not turned back by physical reflection)

Similarity of adj echoic

2 senses of echoic

Sense 1
echoic (vs. nonechoic), imitative, onomatopoeic, onomatopoeical, onomatopoetic -- ((of words) formed in imitation of a natural sound; "onomatopoeic words are imitative of noises"; "it was independently developed in more than one place as an onomatopoetic term"- Harry Hoijer)

Sense 2
echoic, echolike -- (like or characteristic of an echo)
       => reflected (vs. unreflected) -- ((especially of incident sound or light) bent or sent back; "reflected light"; "reflected heat"; "reflected glory")