[over.kill] vt (1957): to obliterate (a target) with more nuclear force than required
[2]over.kill n (1958) 1: a destructive capacity greatly exceeding that required for a given target
2: an excess of something (as a quantity or an action) beyond what is required or suitable for a particular purpose "a propaganda ~" "an ~ in weaponry"
3: killing in excess of what is intended or required