reverberant
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
reverberating
reverberatory
rumbling
sounding
tautological
tautologous
thundering
undamped