From out- + kill.
outkill (third-person singular simple present outkills, present participle outkilling, simple past and past participle outkilled)
- (transitive, stative) To kill more than.
- 2011, Steven Pinker, The Better Angels of Our Nature, Penguin 2012, p. 119:
- Southerners do not outkill northerners in homicides carried out during robberies, they found, only in those sparked by quarrels.