counterkilling
nounEtymology From counter- + killing.
1
A killing carried out in response to another killing.
- The mob pummeled the men suspected of being thugs, and this normally tranquil spot exploded into a melee of killings and counterkillings that left nearly 30 people dead.2009 April 22, Jeffrey Gettleman, “Kenyan Town Strikes Back Against Its Tormenters”, in New York Times: