In fact, he did sniff out the killer in Dexter... and he liked it.
More should have been expected from the teenager who wore a shirt emblazoned with “killer” at his sentencing.
killer fish jumping through the screen, the return of Richard Dreyfuss— Piranha 3D has it all.
late 15c., agent noun from kill (v.). But a surname, Ric[hard] Le Kyller is attested from 1288. Figurative use from 1550s. Meaning "impressive person or thing" is by 1900 (as an adjective, 1979); reduplicated form killer-diller attested by 1938. Killer whale is from 1725; killer instinct is attested from 1931, originally in boxing.
(also killer-diller): not only was it a killer version/ The killer idea of the century is about to be laid on you (1970s+)