1. (不良)反响，反应，影响
If an action or event has repercussions, it causes unpleasant things to happen some time after the original action or event.

1. a movement back from an impact

Synonym: recoilreboundbacklash

2. a remote or indirect consequence of some action

e.g. his declaration had unforeseen repercussions
reverberations of the market crash were felt years later

Synonym: reverberation