Green’s Dictionary of Slang

murder n.

also murdah, murdher

1. [mid-19C+] something (or someone) unbearable, extremely difficult or infuriating.

2. [20C+] (orig. US black) an excellent or marvellous person or thing.

In phrases

get murders off (v.)

[1990s+] to be severely chastised or punished.

SE in slang uses

In compounds

murder house (n.)

[1960s+] (N.Z. juv.) a school dental clinic.

murder-mouth (v.) [1970s] (US black)

1. to make threats that one couldn’t or wouldn’t ever back up with action; thus as n.

2. attrib. use of sense 1.

murder one

see separate entries.

murder rap (n.)

[1920s+] (orig. US) a charge of murder.

In phrases

blue murder (n.)

see separate entry.

get away with murder (v.)

[1910s+] to flout all proprieties with absolute success, to achieve the otherwise unacceptable; occas. with blue.

holler (bloody) murder (v.) (also yell (bloody) murder)

[mid-19C+] (US) to raise an outcry, to make a fuss.

In exclamations

murder!

see separate entry.