Killing, homicide, manslaughter, murder, assassination, trucidation; effusion of blood; blood, blood shed; gore, slaughter, carnage, butchery; battue, massacre; fusillade, noyade; thuggery, thuggism, deathblow, finishing stroke, coup de grace, quietus; execution; judicial murder; martyrdom.  

butcher, slayer, murderer, Cain, assassin, terrorist, cutthroat, garroter, bravo, Thug, Moloch, matador, sabreur; guet-a-pens; gallows, executioner; man-eater, apache, hatchet man [U.S.], highbinder [U.S.].  

regicide, parricide, matricide, fratricide, infanticide, feticide, foeticide, uxoricide, vaticide, suicide, felo de se, hara-kiri, suttee, Juggernath; immolation, auto da fe, holocaust, suffocation, strangulation, garrote; hanging &c. v.; lapidation. 

[Destruction of animals] slaughtering; phthisozoics; sport, sporting; the chase, venery; hunting, coursing, shooting, fishing; pig- sticking; sportsman, huntsman, fisherman; hunter, Nimrod; slaughterhouse, meat packing plant, shambles, abattoir.

 V. kill, put to death, slay, shed blood; murder, assassinate, butcher, slaughter, victimize, immolate; massacre; take away life, deprive of life; make away with, put an end to; despatch, dispatch; burke, settle, do for.

strangle, garrote, hang, throttle, choke, stifle, suffocate, stop the breath, smother, asphyxiate, drown, saber; cut down, cut to pieces, cut the throat; jugulate; stab, run through the body, bayonet, eviscerate; put to the sword, put to the edge of the sword, shoot dead; blow one's brains out; brain, knock on the head; stone, lapidate; give a deathblow; deal a deathblow; give a quietus, give a coupe de grace., behead, bowstring, electrocute, gas &c. (execute) , cut off, nip in the bud, launch into eternity, send to one's last account, sign one's death warrant, strike the death knell of, give no quarter, pour out blood like water; decimate; run amuck; wade knee deep in blood, imbrue one's hands in blood, die a violent death, welter in one's blood; dash out one's brains, blow out one's brains; commit suicide; kill oneself, make away with oneself, put an end to oneself, put an end to it all.  

Adj. killing &c. v.; murderous, slaughterous; sanguinary, sanguinolent; blood stained, blood thirsty; homicidal, red handed; bloody, bloody minded; ensanguined, gory; thuggish, mortal, fatal, lethal; dead, deadly; mortiferous, lethiferous; unhealthy &c. internecine; suicidal, sporting; piscatorial, piscatory.