1) Coming right back at you 2) Exhibiting onomatopoeia 3) Imitative 4) Imitative of a natural sound 5) Like buzz or moo 6) Like hiss or boom 7) Making a comeback 8) Onomatopoeic 9) Onomatopoeical 10) Onomatopoetic 11) Resounding 12) Resounding like a canyon 13) Reverberant 14) Reverberating 1) Echo like 2) Onomatopoeical 3) Reboant 4) Reflected 
[adj] - like or characteristic of an echo 2. [adj] - (of words) formed in imitation of a natural sound
echolike adjective like or characteristic of an echo