killing

[1]	violent death , murder , carnage , butchery , execution , slaughter , bloodshed , death , massacre , genocide , liquidation , mass murder/destruction , decimation , extermination , blood bath , manslaughter , slaying , homicide , fatality
[2]	coup , kill , putting to death , bonanza , success , windfall , stroke of luck , gain , profit , (Colloq) (Brit) bomb
[3]	cleanup

adj.

[1]	devastating , ruinous , destructive , punishing , exhausting , debilitating , fatiguing , tiring , enervating , difficult , arduous
[2]	sidesplitting