THESAURUS
echoing
answering, antiphonal, battological, booming, confutative, duplicative, echoic, growling, imitative, iterative, lingering, parrotlike, persistent, reboant, rebounding, recapitulative, redundant, reduplicative, reechoing, refutative, reiterant, reiterative, rejoining, repeating, repercussive, repetitional, repetitionary, repetitious, repetitive, replying, resounding, respondent, responding, responsive, returning, reverberant, reverberating, reverberatory, rumbling, sounding, tautological, tautologous, thundering, undamped