Cain
aborticide
acaricide
anthelmintic
antibiotic
antiseptic
apache
assassin
assassinator
bactericide
bloodletter
bloodshedder
bravo
bug bomb
burker
butcher
button man
cannibal
carbamate insecticide
chemosterilant
chlorinated hydrocarbon insecticide
contact poison
cutthroat
defoliant
desperado
disinfectant
eradicant
eradicator
executioner
exterminator
fratricide
fumigant
fungicide
garroter
genocide
germicide
gorilla
gun
gunman
gunsel
hatchet man
head-hunter
herbicide
hit man
homicidal maniac
homicide
infanticide
insect powder
insecticide
killer
chemical
chemical substance
acaracide
arsenical
pediculicide
phosphine
scabicide
sheep dip
spray
pest
pesticidal
additive
arsenic
carcinogen
catalyst
cleaner
cyanide
detergent
fertilizer
hormone
hydrocarbon
lubricant
manure
nutrient
permethrin
pharmaceutical
pollutant
pollution
ricin
solvent
toxin