echoic
1. [ adjective ] like or characteristic of an echo
Synonyms: echolike
Related terms: reflected
2. [ adjective ] (of words) formed in imitation of a natural sound
Synonyms: onomatopoeic onomatopoeical onomatopoetic imitative
Examples:

"onomatopoeic words are imitative of noises" "it was independently developed in more than one place as an onomatopoetic term"- Harry Hoijer

Related terms: nonechoic