There are many verbs for killing in Latin. One of the many is occido, occidere. The 2nd person for that verb would be occidis - 'you kill'.
lo pola
The latin root meaning for cise is to cut
to cut or to kill
if I told you I would have to kill you.
It is Latin, literally translated as "not kill" or don't kill. Necant is the plural present verb of to kill.
Must kill = Necare + (conj. of Debere.) e.g. Necare debeo = I must kill.
cide= to cut off ; to kill ex. to kill a dispute
Necare is to kill. It applies to any living creature.
neco necare
From Wikipedia: Homicide (Latin homicidium, homo human being + caedere to cut, kill)
Must kill = Necare + (conj. of Debere.) e.g. Necare debeo = I must kill.
Matricide: From the Latin words for mother and kill