Greek word
phoneús
φονεύς
What it means
a murderer homicide
a murderer (always of criminal (or at least intentional) homicide; which anthrōpoktónos (ἀνθρωποκτόνος) does not necessarily imply; while sikários (σικάριος) is a special term for a public bandit)
Where it comes from
from phónos (φόνος)