echoic

adjectives

(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
echoic, imitative, onomatopoeic, onomatopoeical, onomatopoetic
antonym
nonechoic
like or characteristic of an echo
echoic, echolike