human, individual, mortal, person, somebody, someone, soul - a human being; "there was too much for one person to do"

executioner, public executioner - an official who inflicts capital punishment in pursuit of a warrant

eradicator, exterminator, terminator - someone who exterminates (especially someone whose occupation is the extermination of troublesome rodents and insects)

choker, garroter, garrotter, throttler, strangler - someone who kills by strangling

liquidator, manslayer, murderer - a criminal who commits homicide (who performs the unlawful premeditated killing of another human being)

poisoner - someone who kills with poison

regicide - someone who commits regicide; the killer of a king

felo-de-se, suicide - a person who kills himself intentionally

causal agency, causal agent, cause - any entity that causes events to happen

difficulty - a factor causing trouble in achieving a positive result or tending to produce a negative result; "serious difficulties were encountered in obtaining a pure reagent"

dolphin - any of various small toothed whales with a beaklike snout; larger than porpoises

genus Orcinus, Orcinus - killer whales