reverberation (n.)

• acknowledgment
• answer
• antiphon
• backchat
• boom
• comeback
• echo
• growl
• growling
• grumble
• grumbling
• reaction
• rebound
• receipt
• reflection
• reflex
• reflux
• rejoinder
• repartee
• replication
• reply
• rescript
• rescription
• respondence
• response
• retort
• return
• revulsion
• riposte
• rise
• rumble
• rumbling
• thunder