Reverberation is the persistence of SOUND in a particular environment after the original SOUND has stopped. It is created when a SOUND or NOISE is reflected off of surfaces, such as walls or ceilings, and then heard again by the listener. The crossword solutions for reverberation include THUNDER (7 letters), NOISE (5 letters), VIBRATION (9 letters), REPEAT (6 letters), BOOM (4 letters), RING (4 letters), ROLL (4 letters), RESPONSE (8 letters), RUMBLE (6 letters), SOUND (5 letters), REPERCUSSION (12 letters), PEAL (4 letters), BONG (4 letters), RESONANCE (9 letters), and ECHO (4 letters). These words all describe different aspects of reverberation, from the loudness of THUNDER to the subtle reverberations of an ECHO.