名詞 repercussion:

1. a remote or indirect consequence of some action
   同義詞：reverberation
2. a movement back from an impact
   同義詞：recoil, rebound, backlash

1. A sharp reaction; a repercussion.
   強烈反應后果，影響
2. The president's death had unexpected repercussion.
   總統(tǒng)的逝世引起出乎意料的反響。

re.per.cus.sion

n.（名詞）
An often indirect effect, influence, or result that is produced by an event or action.See Synonyms at impact
反響：由某一事件或行為產生的、通常是間接的后果、影響或結果參見 impact
A recoil, rebounding, or reciprocal motion after impact.
撞回：碰撞之后的彈回或反向運動
A reflection, especially of sound.
回響：反射，尤指回聲

來源：
Middle English repercussioun
中古英語 repercussioun
from Old French repercussion
源自 古法語 repercussion
from Latin repercussiô repercussiôn-
源自 拉丁語 repercussiô repercussiôn-
from repercussus [past participle of] repercutere [to cause to rebound]
源自 repercussus [] repercutere的過去分詞 [使彈回]
re- [re-]
re- [前綴，表.回應，后退.等意]
percutere [to strike] * see percuss
percutere [打擊] *參見 percuss

【引伸】
re.percus.sive
adj.（形容詞）