"reverberation" in the noun sense
1. echo, reverberation, sound reflection, replication
the repetition of a sound resulting from reflection of the sound waves
"she could hear echoes of her own footsteps"
2. repercussion, reverberation
a remote or indirect consequence of some action
"his declaration had unforeseen repercussions"
"reverberations of the market crash were felt years later"
Source: WordNet® (An amazing lexical database of English)
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